Remote measurement of junction temperature of LEDs using pulsed-laser Raman scattering spectroscopy

• Project/Area Number: 26420237
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Power engineering/Power conversion/Electric machinery
• Research Institution: Kyushu University
• Principal Investigator: Yukihiko Yamagata 九州大学, 総合理工学研究院, 准教授 (70239862)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: LED / ジャンクション温度 / パルスレーザー / ラマン散乱 / GaN / 蛍光樹脂 / 温度分布 / 同時計測 / 照明用白色LED / 1次元分布

Outline of Final Research Achievements

A novel method by using a pulsed-laser Raman scattering technique was employed to estimate junction temperatures of several chips arranged on a straight line in a phosphor-less blue-LED package and a phosphor-deposited blue-LED (white-LED) package. Simultaneous observation of GaN-E2H Raman spectra from the several chips was done successfully by using a sheet-shaped laser beam. This technique was applied to estimation of the junction temperatures of the several chips in the phosphor-less blue LED package during operation. Also, the GaN-E2H Raman signal from the white-LED was observed for the first time by using a 633 nm laser reducing the influence of the phosphor and the scatterer on the Raman measurement. It is concluded that this technique would be a useful method for remoteness and simultaneous multipoint measurement of the junction temperature of a white-LED package in which several chips are integrated.

Research Products

• [Journal Article] パルスレーザーラマン法を用いた動作中の青色ＬＥＤジャンクション温度計測システムの開発 (2017)
  • Author(s): 堀内 誠, 堤 晋一, 山形幸彦, 富田健太郎, 真鍋由雄
  • Journal Title: 九州大学大学院総合理工学府報告 Volume: 38 Pages: 1-7
  • NAID: 120006328973
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Development of simultaneous measurement system of junction temperatures in a LED module using pulsed-laser Raman scattering (2016)
  • Author(s): M. Horiuchi, S. Tsutsumi, K. Tomita, Y. Manabe, Y. Yamagata
  • Journal Title: Proceedings of the 15th International Symposium on the Science and Technology of Lighting (May 22nd‐27th, 2016, Kyoto University, Kyoto, Japan) Volume: CP39 Pages: 1-2
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Influence of phosphor on junction-temperature measurement of white-LED using pulsed-laser Raman scattering (2016)
  • Author(s): S. Tsutsumi, M. Horiuchi, K. Tomita, Y. Manabe, Y. Yamagata
  • Journal Title: Proceedings of the 15th International Symposium on the Science and Technology of Lighting (May 22nd‐27th, 2016, Kyoto University, Kyoto, Japan) Volume: CP40 Pages: 1-2
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Development of junction temperature estimation system for light-emitting LED using pulsed-laser Raman scattering (2015)
  • Author(s): Makoto Horiuchi, Yukihiko Yamagata, Shin-ichi Tsutsumi, Kentaro Tomita, Yoshio Manabe
  • Journal Title: Journal of Solid State Lighting Vol. 2, No. 1 (2015) 2:7 (7 pages) Volume: 2 Issue: 1 Pages: 1-7
  • DOI: 10.1186/s40539-015-0026-9
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Development of temperature measurement system for LED junction using pulsed-laser Raman scattering (2014)
  • Author(s): Yukihiko Yamagata, Makoto Horiuchi , Kentaro Tomita , Yoshio Manabe
  • Journal Title: Proceedings of the 14th International Symposium on Science and Technology of Lighting (Spazio Como, Como Lake, Italy, Jun. 22-27, 2014) Volume: 1 Pages: 245-248
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Pulsed-laser Raman scattering for simultaneous estimation of junction temperatures in a LED module (2017)
  • Author(s): Makoto Horiuchi, Yukihiko Yamagata, Kentaro Tomita, Yoshio Manabe
  • Organizer: BIT’s 6th Annual World Congress of Advanced Materials-2017
  • Place of Presentation: Xi’an, China
  • Year and Date: 2017-06-14
  • Int'l Joint Research / Invited
• [Presentation] Pulsed-laser Raman scattering for measurement of junction temperature of white-LED (2016)
  • Author(s): Y. Yamagata
  • Organizer: the 5th International Conference and Exhibition on Lasers, Optics and Photonics
  • Place of Presentation: Atlanta, USA
  • Year and Date: 2016-11-28
  • Int'l Joint Research / Invited
• [Presentation] パルスレーザーラマン法による照明用白色LEDのジャンクション温度計測システムの開発 (2016)
  • Author(s): 山形幸彦，堤 晋一,富田健太郎，堀内 誠，真鍋由雄
  • Organizer: 平成28年度(第69回)電気・情報関係学会九州支部連合大会
  • Place of Presentation: 宮崎大学
  • Year and Date: 2016-09-29
• [Presentation] パルスレーザーラマン法による照明用白色LEDのジャンクション温度計測システムの開発 (2016)
  • Author(s): 堤 晋一, 山形幸彦, 堀内 誠, 真鍋由雄
  • Organizer: 平成28年度(第49回)照明学会全国大会
  • Place of Presentation: 日本大学
  • Year and Date: 2016-08-31
• [Presentation] パルスレーザーラマン法を用いたLEDジャンクション温度の同時計測システムの開発 (2016)
  • Author(s): 堀内 誠, 真鍋由雄, 堤 晋一, 山形幸彦, 富田健太郎
  • Organizer: 第31回光源物性とその応用研究会,
  • Place of Presentation: 北とぴあ（東京都北区王子）
• [Presentation] パルスレーザーラマン法によるLEDモジュール内のジャンクション温度分布計測システムの開発 (2015)
  • Author(s): 堤 晋一, 山形幸彦，富田健太郎，堀内 誠，真鍋由雄
  • Organizer: 平成27年度(第68回)電気・情報関係学会九州支部連合大会
  • Place of Presentation: 福岡大学
  • Year and Date: 2015-09-26
• [Presentation] パルスレーザーラマン法によるLEDモジュール内のジャンクション温度分布計測システムの開発 (2015)
  • Author(s): 堤 晋一, 山形幸彦，富田健太郎，堀内 誠，真鍋由雄
  • Organizer: 平成27年度(第48回)照明学会全国大会
  • Place of Presentation: 福井大学
  • Year and Date: 2015-08-27
• [Presentation] Development of simultaneous measurement system of junction temperatures in a LED module using pulsed-laser Raman scattering (2015)
  • Author(s): M. Horiuchi, S. Tsutsumi, K. Tomita, Y. Manabe, Y. Yamagata
  • Organizer: 15th International Symposium on the Science and Technology of Lighting
  • Place of Presentation: Kyoto University
  • Year and Date: 2015-05-22
  • Int'l Joint Research
• [Presentation] Influence of phosphor on junction-temperature measurement of white-LED using pulsed-laser Raman scattering (2015)
  • Author(s): S. Tsutsumi, M. Horiuchi, K. Tomita, Y. Manabe, Y. Yamagata
  • Organizer: 15th International Symposium on the Science and Technology of Lighting
  • Place of Presentation: Kyoto University
  • Year and Date: 2015-05-22
  • Int'l Joint Research
• [Presentation] パルスレーザーラマン法による発光中LEDのジャンクション部の温度計測 (2014)
  • Author(s): 山形幸彦，堀内 誠，富田健太郎，真鍋 由雄
  • Organizer: 平成26年度(第67回)電気・情報関係学会九州支部連合大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2014-09-18 – 2014-09-19
• [Presentation] パルスレーザーラマン法を用いたLED接合部の温度計測システムの開発 (2014)
  • Author(s): 山形幸彦，富田健太郎，堀内 誠，真鍋 由雄
  • Organizer: 平成26年度(第47回)照明学会全国大会
  • Place of Presentation: 埼玉大学
  • Year and Date: 2014-09-04 – 2014-09-06
• [Remarks] 九州大学・研究者情報・研究活動（山形幸彦）
  • URL: http://hyoka.ofc.kyushu-u.ac.jp/search/details/K002232/research.html
• [Remarks] 電離反応工学研究室（内野研究室）ホームページ
  • URL: http://www.asem.kyushu-u.ac.jp/ep/ep01/jp/index.html