Name:  Hom Nath  LUITEL

Contact: Mobile: (977) 9851177846

Email: [email protected]

Position: Research Fellow, INRI Nepal

Chairperson, Jubilant College, Nepal

 

 

Professional profile

I am a professional educationist and scientist working on recent challenges of sustainable society. I have been working at world class industry Toyota Motors, Japan where I get expertise on group work and collaboration over 50 international companies to fulfil the present need of society. Further I have been actively participating in University teaching as visiting professor at Ryukoku University, Japan, Amrit Science Campus, Kathmandu & Jubilant College, Kalimati.  Besides, I am a research and market consultant of Shinwa Biso Company (Osaka) where we motivate our researcher to discover advance technologies and products needed to sustain the present society.

Career summary

April 2012- 2023             Research Advisor; Shinwa Biso Co., Osaka, Japan

Outline

I give research overview and design the research outline of technologies and products urgently needed in the present global market. I go for various international seminars, discuss with different companies about their need of technologies and products and design our research outline where our researchers do their best.

Key achievements/projects

  • We have commercialized at least 10 products and filed 5 patents on latest technologies.
  • We received 3 National grants to conduct research on high level technologies.

 

April 2015- April 2018    Researcher; Toyota Motors (R&D) Japan

Outline

I was actively participated to design and test Fuel cell energy devices for next generation Toyota motors in which petroleum and electricity is not needed to run the cars. Energy is generated by breaking water into hydrogen fuel and by burning hydrogen fuel engine will run.

Besides I was working on Solar cells to utilize the solar energy in the future cars and house appliances.

Key achievements/projects

  • We have filed 10 patents on latest technologies.
  • We received 1 National grants to conduct research on high level technologies.

 

January 2012 – March 2015   Senior Researcher; Shinwa Biso Co., Osaka, Japan

Outline

To design and develop various products related to luminescent materials like LED, glow in dark items, safety indicators, solar cells etc and participate in various seminars to study the current global need.

 

April 2010 – Jan. 2012              Post doctorate Researcher; Saga University, Japan

Outline

Conduct research on recent topics and guide master and bachelor students for their research. Besides, technical writing academic courses were taken to train students how to write scientific papers, patents and present in seminars.

 

June 2006 – Nov. 2007             Lecturer at Amrit Science Campus

                                          

 

 

 

Education & qualifications

 

Degree:       Doctoral of Philosophy (PhD), Materials Science/ Applied Chemistry

Date of Graduation: March 2010

Affiliation: Department of Advanced Technology Fusion, Saga University, Japan

Specialization: Development of noble materials for the sustainable industries; especially, luminescent materials for LEDs, displays, solar cells, lasers and bio-imaging

 

Degree:      Master, Applied Chemistry

Date of Graduation: March 2006

Affiliation: Central Department of Chemistry, Tribhuvan University, Kathmandu, Nepal

Specialization: Study of natural drugs (Jadi-buti) used in traditional Nepalese society and explore the chemicals present in such drugs.

 

Degree: BSc, General Science (Chemistry Major)

Date of Graduation: Dec 2002

Affiliation: Amrit Science Campus, Tribhuvan University, Kathmandu, Nepal

 

Fellowships / Awards

  • ALCA research grant 2015-2018 (Electricity generation by combination of solar-pumped lasers and PV devices)
  • Sasagawa Scientific Research Grant from the Japan Science Society, 04, 2009 to 03, 2010.
  • Top Chemistry Graduate of the year 2002-2004, Tribhuvan University (Nepal), 2004.
  • Chitta Bahadur Tuladhar Gold Medal – 2001, Amrit Science Campus, Tribhuvan University.

Languages

  1. Mother tongue Nepali.
  2. Excellent in English (IELTS score 7.5 dated 2007).
  3. Good in Japanese (level-N2).

Other activities

  1. Editor of International Journals; Display and Journal of Materials.
  2. Member of Nepal Chemical Society
  3. Member of Japanese Ceramics Society, European and American Ceramics Societies.
  4. Reviewer of more than 20 International Journals from ACS, RSC, ACS, Willey and Elsevier publications.

 

 

 

Scientific Outcomes (Patents, Publications, Invited lectures, Seminars)

  1. Patents (All applicable)
  2. N. Luitel, Upconversion phosphors, US9758723B2.
  3. N. Luitel, Up-conversion phosphors, EP2985332B1.
  4. N. Luitel, Upconversion materials and applications, JP6190941B2.

Original in Japanese: アップコンバージョン蛍光体.

  1. N. Luitel, H. Mizukami, “Long persistent phosphors and preparation methods”, JP A2012121974.
  2. N. Luitel, S. Mizuno, Y. Takeda, Luminescent Materials, Patent application no. P16-03890-JP01.

(Original in Japanese: ルイテル ホム ナト,水野真太郎,竹田康彦, 発光材料, 豊田中研)

  1. N. Luitel, S. Mizuno, Y. Takeda, Luminescent Materials, Patent application no. P16-26727-JP01.

(Original in Japanese: 特願2016-26727、ルイテル、水野、竹田、谷「発光材料」、豊田中研)

  1. N. Luitel, S. Mizuno, Y. Takeda, Luminescent Materials, Patent application no. P15-212931-JP01.

(Original in Japanese: 出願、特願2015-212931、ルイテル、水野、竹田、谷、「発光材料」、豊田中研)

  1. Takeda, S. Mizuno, H.N. Luitel, Luminescent Materials, Patent application no. P15-204072-JP01.

(Original in Japanese: 出願、特願2015-204072、竹田、水野、ルイテル、谷、「発光材料」、豊田中研)

  1. Takeda, S. Mizuno, H.N. Luitel, Luminescent Materials, Patent application no. P15-244560-JP01.

(Original in Japanese: 出願、特願2015-244560、竹田、水野、ルイテル、谷「発光材料」、豊田中研)

  1. N. Luitel, “Long persistent yellow phosphorescence in composite phosphor”, Application no. P16-504105-JP01.

 

  1. Peer Reviewed Papers (Selected)
  2. Takeda, S. Mizuno, H.N. Luitel, T. Tani, A broadband‐sensitive upconverter: Garnet‐type Ca3Ga2Ge3O12codoped with Er3+, Y3+, Li+, Ni2+, and Nb5+, J. American Ceramic Society, 102 (6), 3457-3467, 2019.
  3. N. Luitel, S. Mizuno, Y. Takeda, Broadband-sensitized upconversion of ABO3:Tm,Ni (A=Ca,Sr,Ba; B=Ti,Zr,Hf), Journal of Photoenergy, 2019, 1-11, 2019.
  4. N. Luitel, R. Chand, T. Watari, ZnMoO4:Er3+,Yb3+ phosphor with controlled morphology and enhanced upconversion through alkali ions doping, Optical Materials, 78, 302-311, 2018.
  5. Takeda, H.N. Luitel, S. Mizuno, Broadband-sensitive upconversion of Er,Ni,Nb-codoped Gd3Ga5O12 garnet, Jap. J. Appl. 57 (8S3), 08RF02, 2018.
  6. Takeda, H.N. Luitel, S. Mizuno, Competing effects of sensitization and energy dissipation by Ni2+ incorporation in La(Ga0.5Sc0.5)O3:Er,Ni,Nb upconverters, J. Luminescence, 194, 778-784, 2018.
  7. Kobwittaya, Y. Oishi, T. Torikai, M. Yada, T. Watari, H. N. Luitel, Nearly pure NIR to NIR upconversion luminescence in Tm3+, Yb3+ codoped ZnO-TiO2 composite phosphor powder, Vacuum, 148, 286-295, 2018.
  8. N. Luitel, S. Mizuno, T. Tani, Y. Takeda, Broadband-sensitized upconversion of ATiO3:Er,Ni (A= Mg, Ca, Sr, Ba), J. Ceramic Society of Japan, 125, 821-828, 2017.
  9. N. Luitel, S. Mizuno, T. Tani, Y. Takeda, Effect of Ti compositions for efficiency enhancement of CaTiO3:Er3+,Ni2+ broadband-sensitive upconverters, RSC Advances, 7, 41311, 2017.
  10. N. Luitel, S. Mizuno, T. Tani, Y. Takeda, CaTiO3:Er3+,Ni2+ broadband-sensitive upconverter: An effective way to harvest unused NIR solar irradiation for c-Si solar cells, Physica Status Solidi (a), 1600899, 2017.
  11. Motohiro, Y. Takeda, H.N. Luitel, et. al., Concept of the solar-pumped laser-photovoltaics combined system and its application to laser beam power feeding to electric vehicles, Jap. J. Appl. Phys., 56, 08MA07, 2017.
  12. N. Luitel, S. Mizuno, T. Tani, Y. Takeda, Effect of A-site cations on the broadband-sensitive upconversion of AZrO3:Er3+,Ni2+ (A = Ca, Sr, Ba) phosphors, Optical Materials, 64, 314, 2017.
  13. Kobwittaya, Y. Oishi, M. Yada, T. Watari, H. N. Luitel, Bright red upconversion luminescence from Er3+ and Yb3+ co-doped ZnO-TiO2 composite phosphor powder, Ceramics International, 43, 13505, 2017.
  14. Kobwittaya, Y. Oishi, T. Torikai, M. Yada, T. Watari, H. N. Luitel, Synthesis and upconversion luminescence properties of ZnO–TiO2 containing Ho3+ and Yb3+, J. Ceramic Society of Japan, 125, 559, 2017.
  15. N. Luitel, R. Chand, H. Hamajima, et.al., Highly efficient NIR to NIR upconversion of ZnMoO4:Tm3+,Yb3+ phosphors and their application in biological imaging of deep tumors, J. Mater. Chem. B, 4, 6192, 2016.
  16. N. Luitel, S. Mizuno, T. Tani, Y. Takeda, A broadband-sensitive Ni2+, Er3+ based upconverter for crystalline silicon solar cells, RSC Advances, 6, 55499, 2016.
  17. N. Luitel, T. Watari, Color tunable persistent luminescence in M2MgSi2O7:Eu2+,Dy3+ (M=Ca,Sr,Ba) phosphors with controlled microstructure, J. Applied Chemical Sciences International, 7, 76, 2016.
  18. Takeda, S. Mizuno, H.N. Luitel, T. Tani, Broadband sensitive cooperative upconversion emission of La(Ga,Sc,In)O3:Er,Ni,Nb, Applied Physics Express, 9, 112402, 2016.
  19. Takeda, H.N. Luitel, S. Mizuno, et.al., Energy transfer between Ni2+ sensitizers and Er3+ emitters in broadband-sensitive upconverters La(Ga,Sc,In)O3:Er,Ni,Nb, J. Applied Physics, 120, 073102, 2016.
  20. Y Takeda, N. Luitel, S Mizuno, T Tani, A broadband-sensitive upconverter La(Ga0.5Sc0.5)O3:Er,Ni,Nb for crystalline silicon solar cells, Applied Physics Letters, 108, 043901, 2016.
  21. N. Luitel, R. Chand, T. Torikai, M. Yada, T. Watari, Y2BaZnO5:Er3+ microcapsules with enhanced upconversion by vanadium ion codoping, RSC Advances, 6, 11554, 2016.
  22. N. Luitel, R. Chand, T. Torikai, M. Yada, T. Watari, CaMoO4:RE3+,Yb3+,M+ phosphor with controlled morphology and color tunable upconversion, Displays, 42, 1-8, 2016.
  23. N. Luitel, R. Chand, T. Torikai, M. Yada, T. Watari, Highly efficient NIR-NIR upconversion in K-substituted CaMoO4:Tm3+,Yb3+ for potential biomedical applications, RSC Advances, 5, 17034, 2015.
  24. N. Luitel, R. Chand, T. Watari, A novel orange red emitting ZnB4O7:Eu3+ phosphor with urchin like nanostructure, Advances in Condensed Matter Physics, Vol.2015, Article ID 797056, 9 pages, 2015.
  25. N. Luitel, R. Chand, T. Watari, Design and fabrication of long persistent yellow afterglow in a composite phosphor via energy transfer mechanism, J. Applied Chemical Science International, 3, 1-8, 2015.
  26. N. Luitel, R. Chand, et.al., Design of Long Persistent White Phosphorescence in a Composite Phosphor Via Energy Transfer Mechanism, International J. Materials Science and Applications, 4, 107-114, 2015.
  27. N. Luitel, R. Chand, T. Watari, et.al., Bright Orange Upconversion in a ZnO-TiO2 Composite Containing Er3+ and Yb3+, Optical Materials, 36, 591–595, 2014.
  28. M. Alam, W. Ji, H.N. Luitel, Y. Ozaki, T. Watari, K. Nakashima, Template free synthesis of dendritic Silver nanostructures and their applications in surface enhanced Raman scattering, RSC Advances, 4, 52686, 2014.
  29. M. Alam, B.P. Bastakoti, H.N. Luitel et.al., Synthesis of hollow silica nanosphere with high accessible surface area and their hybridization with carbon matrix for drastic enhancement of electrochemical property, Applied surface Science, 314, 552–557, 2014.
  30. Shiraishi, M. Ueno, R. Chand, Y. Shibata, H.N. Luitel, Effect of silanization of titanium dioxide on photocatalytic decomposition of 2,4-dinitropheonol under irradiations with artificial UV light and sunlight, J. Chemical Technology & Biotechnology, 89, 81-87, 2014.
  31. N. Luitel, T. Watari, R. Chand, T. Torikai, M. Yada, Rare earth free Zn3V2O8 phosphor with controlled microstructure and its photocatalytic activity, International J. Photoenergy, Article ID 410613, 2013.
  32. N. Luitel, T. Watari, et.al., Tuning the luminescence color and enhancement of afterglow properties of Sr(4-x-y)CaxBayAl14O25: Eu2+,Dy3+ phosphor by adjusting the composition, Mater. Sci. Eng. B, 178, 834– 842, 2013.
  33. N. Luitel, T. Watari, Mitsunori Yada, Giant improvement on the afterglow of Sr4Al14O25:Eu2+,Dy3+,Ag+ phosphor by systematic investigation on various parameters, J. Materials, Vol. 2013, Article ID 613090, 2013.
  34. Watari, H.N. Luitel, T. Tsuji, T. Torikai, M. Yada, C-N Xu, T. Terasaki, Fabrication and Characterization of Calcium Silicate Phosphor: Ca2SiO4 and Ca2MgSi2O7, Materials Science Forum, 761, 59-64, 2013.
  35. Chand, K. Katoh, H.N. Luitel, et.al., Effect of Transition Metal Doping under Reducing Calcination Atmosphere on Photocatalytic Property of TiO2 Immobilized on SiO2 Beads, J. Environ. Sciences, 25,　60211-60213, 2013.
  36. N. Luitel, T. Watari, et.al., Photoluminescence properties of a novel orange red emitting Sr4Al14O25:Sm3+ phosphor and PL enhancement by Bi3+ doping, Optical Materials, 34, 1375–1380, 2012.
  37. Sasidharan , H.N. Luitel, N. Gunawardhana, S. Yusa, T. Watari, K. Nakashima, Synthesis of magnetic α-Fe2O3 and Fe3O4 hollow nanospheres for sustained release of ibuprofen, Materials Letters, 73, 4-7, 2012.
  38. Sasidharan, N. Gunawardhana, H.N. Luitel, et.al., Novel LaBO3 hollow nanospheres of size 34 ± 2 nm templated by polymeric micelles, J. Colloid and Interface Science, 370, 51-57, 2012.
  39. Chand, H.N. Luitel, K. Katoh, K. Nakano, Enhanced photocatalytic activity of TiO2/SiO2 by influence of Cu-doping under reducing calcinations atmosphere, Catalysis Communication, 13, 49-53, 2011.
  40. N. Luitel, T. Watari, T. Torikai, M. Yada, C-N Xu, K. Nanoka, Highly water resistant surface coating by fluoride on long persistent Sr4Al14O25:Eu2+/Dy3+ phosphor, Applied Surface Sciences, 256, 2347-2352, 2010.
  41. N. Luitel, M. Rajbhandari, S.K. Kalauni, S. Awale, K. Masuda, and M.B. Gewali, Chemical Constituents from Oroxylum indicum of Nepalese origin, Scientific World, 8, 66-68, 2010.
  42. N. Luitel, T. Watari, T. Torikai, M. Yada, Luminescent properties of Cr3+ doped Sr4Al14O25: Eu/Dy blue-green and red phosphor, Optical Materials, 31, 1200-1204, 2009.
  43. N. Luitel, T. Watari, T. Torikai, M. Yada, Effects of particle size and type of alumina on the morphology and photoluminescence properties of Sr4Al14O25: Eu2+/Dy3+ phosphor, Adv. Mater. Sci. Eng., Vol. 2009, 1-4, 2009.
  44. Chand, H.N. Luitel, T. Watari, K. Inoue, Chemical modification of carbonized wheat and barley straw using HNO3 and adsorption of Cr(III), J. Hazardous Materials, 167, 319-324, 2009.
  45. Chand, H.N. Luitel, T. Watari, et.al., Selective adsorption of precious metal on porous carbon derived from barley straw and rice husk, Minerals Engineering, 22, 1277-1282, 2009.
  46. N. Luitel, T. Watari, T. Torikai, M. Yada, Preparation and characterization of Eu and Dy doped Sr4Al14O25 phosphor, Materials Science Forum, 569, 213-216, 2008.

 

 

 

 

  1. Proceeding Papers:
  2. N. Luitel, Y. Takeda, S. Mizuno, Ni2+,Tm3+ sensitized broadband-sensitive upconverters: An effective approach to harvest broadband NIR solar radiation, The Ceramics Society of Japan Fall meeting 2017, Kobe University, September 19-21, 2017.
  3. N. Luitel, Y. Takeda, S. Mizuno, CaTiO3:Er3+,Ni2+ broadband-sensitive upconverter for solar energy harvesting, The Ceramics Society of Japan Annual meeting 2017, Nihon University, March 19-21, 2017.
  4. N. Luitel, Y. Takeda, S. Mizuno, Ni2+-Er3+ based broadband-sensitive upconverters for crystalline silicon solar cells, The Ceramics Society of Japan Annual meeting 2016, Waseda University, March 14-16, 2016.
  5. Takeda, H.N. Luitel, S. Mizuno, T. Tani, Broadband-sensitive upconverters co-doped with Er3+ and Ni2+ for crystalline silicon solar cells SPIE Optics+ Photonics for Sustainable Energy, San Diago, CA, 99370E-99370E-9, 2016.
  6. N. Luitel, Rumi Chand, Toshio Torikai, Mitsunori Yada, Hiroshi Mizukami, Hirohiko Gotou, Takanori WATARI, Rare earth free Zn3V2O8 phosphor with controlled microstructure: Photophysical and photocatalytic activity”, The 30th Japan-Korea International Seminar on Ceramics, Nov. 2013, Kitakyushu, Japan.
  7. N. Luitel, Ryohei Yamaguchi, Takanori Watari, Toshio Torikai and Mitsunori Yada, Synthesis and Luminescent Properties of Ca2MgSi2O7:Eu2+,Tb3+,Mn2+ Phosphor, ISEPD 2013, Jan. 15-18, Kagoshima, Japan.
  8. Takanori Watari, N. Luitel, Tomohiro Tsuji, Komei Mori, Toshio Torikai and Mitsunori Yada, Fabrication and Characterization of Calcium Silicate Phosphors- Ca2SiO4 and Ca2MgSi2O7, ISEPD 2013, Jan. 15-18, Kagoshima, Japan.
  9. N. Luitel, Takanori Watari, Toshio Torikai and Mitsunori Yada, Improvement of Phosphorescence Characteristics of Strontium Aluminates Phosphor, The 1st Saga University and Daegu University Joint Seminar (New Trends in Chemistry and Biology).
  10. N. Luitel, Takanori Watari, Toshio Torikai and Mitsunori Yada, Effects of Particle Size and Type of Alumina on the Photoluminescence properties of Sr4Al14O25:Eu2+/Dy3+ Phosphor, The 21st International Symposium on Chemical Engineering, Saga University, Dec. 6-7, 2008.

 

Seminars and workshop attended

  1. Invited Lectures
  2. Ni2+,Ho3+ sensitized super broadband-sensitive upconverters: An effective approach to harvest broadband NIR solar radiation, Hom N. Luitel, Takeda, S. Mizuno, The Ceramics Society of Japan Annual meeting 2017, Tohoku University, March 15-17, 2018 .
  3. “Upconversion phosphors for the Display and Biomedical applications,” Hom Nath Luitel, T. Watari, G. Gotou,　“The International Conference on Advanced Materials and Nanotechnology”, Nov. 2014, Kathmandu, Nepal.
  4. “Persistent Luminescence on Strontium Aluminates Based Phosphors”, Hom Nath Luitel, Takanori Watari, Toshio Torikai, Mitsunori Yada, Hirohiko Goto, “The 2nd International Workshop on Persistent and Photostimulable Phosphors”, Nov. 2013, Guangzhou, China.
  5. Oral Presentations
  6. Upconversion materials for Displays, Energy conversion and Biomedical applications, Hom Nath Luitel, Rumi Chand, Hirohiko Gotou, Watari, ACCIS 2019, Kathmandu, September 24-27, 2019.
  7. Super broadband-sensitive upconverters to harvest NIR solar radiation, Hom N. Luitel, Takeda, S. Mizuno, Japan Ceramic Society Ann Meeting, Tohoku University, March 15-17, 2018.
  8. Ni2+,Tm3+ sensitized broadband-sensitive upconverters: An effective approach to harvest broadband NIR solar radiation, Hom N. Luitel, Takeda, S. Mizuno, The Ceramics Society of Japan Fall meeting 2017, Kobe University, September 19-21, 2017.
  9. “Broadband spectral upconversion in CaTiO3:Ni2+,Er3+ for solar energy harvesting”, Hom N. Luitel, Shintaro Mizuno, Yasuhiko Takeda, European Ceramics Society, Budapest, July 9-13, 2017.
  10. “CaTiO3:Ni2+-Er3+ sensitized broadband-sensitive upconverters”, Hom N. Luitel, Shintaro Mizuno, Yasuhiko Takeda, Japan Ceramic Society Annual Meeting, Nihon University, Tokyo, March 17-19, 2017.
  11. “A broadband sensitive upconverters for c-Si solar cells”, Yasuhiko Takeda, Hom N. Luitel, Shintaro Mizuno, Toshihiko Tani, Japan Physical Society Annual Meeting, Tokyo, March 14-16, 2017.
  12. “Ni2+-Er3+ sensitized broadband-sensitive upconverters for c-Si solar cells”, Hom N. Luitel, Y. Takeda, S. Mizuno, T. Tani, European Materials Research Society Fall Meeting, Warsaw, September 18-22, 2016.
  13. “Broadband-sensitive upconverters co-doped with Er3+ and Ni2+ for crystalline silicon solar cells, Yasuhiko Takeda, Hom N. Luitel, Shintaro Mizuno, Toshihiko Tani, SPIE Optics and Photonics west Fall Meeting, San Diego, August 28-1, 2016.
  14. “Broadband sensitive Ni2+-Er3+ based upconverters for c-Si solar cells”, Hom N. Luitel, Yasuhiko Takeda, Shintaro Mizuno, Toshihiko Tani, Japan Ceramic Society Annual Meeting, Waseda University, Tokyo, March 14-16, 2016
  15. “A broadband sensitive upconverters for c-Si solar cells”, Yasuhiko Takeda, Hom N. Luitel, Shintaro Mizuno, Toshihiko Tani, Japan Physical Society Annual Meeting, Tokyo, March 18-21, 2016
  16. “Full Color Up-conversion in Oxide based phosphors for Color Display,” Hom N. Luitel, Takanori Watari, Toshio Torikai and Mitsunori Yada, The 38th International Conference & Exposition on Advanced Ceramics and Composites, Daytona, Florida, Jan. 19-21,
  17. “Rare earth free Zn3V2O8 phosphor with controlled microstructure: Photophysical and photocatalytic activity”, Hom N. LUITEL, Rumi CHAND, Toshio TORIKAI, Mitsunori YADA, Hiroshi MIZUKAMI, Hirohiko GOTOU, Takanori WATARI, The 30th Japan-Korea International Seminar on Ceramics, Kitakyushu, Japan Nov. 2013.
  18. “Fabrication and Characterization of ZnO-MO2 (M:Si,Ti) Up-conversion Phosphor”, Takanori Watari*, Hom N. Luitel, Risa Okuda, Maiko Mukai, Toshio Torikai, Mitsunori Yada and Hirohiko Gotou, The 2nd International Workshop on Persistent and Photo-stimulable Phosphors, Guangzhou, China Nov. 2013.
  19. “Fabrication and Characterization of Calcium Silicate Phosphors- Ca2SiO4 and Ca2MgSi2O7”, Hom N. Luitel, Takanori Watari, Tomohiro Tsuji, Komei Mori, Toshio Torikai and Mitsunori Yada, ISEPD-2013, Kagoshima, Japan, Jan. 2013.
  20. “Synthesis and Luminescent Properties of Ca2MgSi2O7:Eu2+,Tb3+,Mn2+ Phosphor”, Ryohei Yamaguchi, Hom N. Luitel, Takanori Watari, Toshio Torikai and Mitsunori Yada, ISEPD-2013, Kagoshima, Japan, Jan. 15-18, 2013.
  21. “A novel orange-yellow upconversion luminescence on ZnO-TiO2:Er3+,Yb3+ phosphor” Hom N. Luitel, Takanori Watari, Kazuya Ikeue, Toshio Torikai, Mitsunori Yada, Nagasaki University Symposium, Japan, 2012.
  22. “Development and Application of Photoluminescent Phosphors,” Hom N. Luitel, T. Watari, International Forum on Mechanoluminescence and Novel Structural Health Diagnosis, Fukuoka, Japan, Nov. 2011.
  23. “Synthesis and Characterization of Multicolor Inorganic Phosphors and Their Application in Displays,” Hom N. Luitel, T. Watari, H. Mizukami, Advanced Materials and Nanotechnology, Kathmandu, Nepal, Oct. 2011.
  24. “Preparation and characterization of (Ca-Sr) aluminate: Eu, Nd phosphors”, Hom N. Luitel, T. Watari, The CJK2009 Seminar and Summer Workshop, Jeju, Korea, June 2009.
  25. “Preparation of Sr4Al14O25 phosphor and protective coating by ammonium fluoride”, Hom N. Luitel, T. Watari, Japan-China-Korea (CJK2009) Seminar & Summer Workshop, Jeju, Korea, June 2009.
  26. “Fabrication of ceramic phosphors by penetration process using ceramic plate”, Hom N. Luitel, T. Watari, The 21st JSPS-KOSEF CUP Seminar between Japan & Korea, Awaji Japan, Dec. 2008.

 

  1. “Development and application of Sr4Al14O25: Eu/Dy blue-green long persistent phosphor”, Hom N. Luitel, T. Watari, The 21st JSPS-KOSEF CUP seminar between Japan and Korea, Awaji, Japan, Dec. 2008.
  2. “Effect of particle size and type of alumina on the morphology and photoluminescence properties of Sr4Al14O25: Eu/Dy phosphor”, Hom N. Luitel, T. Watari, The 21st International Symposium on Chemical Engineering, Saga University, Japan, Dec. 2008.
  3. “Effect of flux and rare metal ions on the phosphorescence properties of Sr4Al14O25 phosphor”, Hom N. Luitel, T. Watari, The 1st Workshop on New Trends in Chemistry and Biology, Saga University, Japan, 2008.
  4. “Preparation and properties of blue-green emitting Sr4Al14O25: Eu2+, Dy3+ phosphor for various display applications”, Hom N. Luitel, T. Watari, Nepal Chemical Congress, Kathmandu, Nepal, May 2008.
  5. “Preparation & properties of Sr4Al14O25:Eu,Dy phosphor”, Hom N. Luitel, T. Watari, The 9th international Symposium on Eco-Materials Processing and Design, Changwon, Korea, Jan. 2008.