White LEDs with limit luminous efficacy

V. M. Lisitsyn, V. S. Lukash, S. A. Stepanov, Ju Yangyang

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

9 Цитирования (Scopus)

Аннотация

In most promising widespread gallium nitride based LEDs emission is generated in the blue spectral region with a maximum at about 450nm which is converted to visible light with the desired spectrum by means of phosphor. The thermal energy in the conversion is determined by the difference in the energies of excitation and emission quanta and the phosphor quantum yield. Heat losses manifest themselves as decrease in the luminous efficacy. LED heating significantly reduces its efficiency and life. In addition, while heating, the emission generation output and the efficiency of the emission conversion decrease. Therefore, the reduction of the energy losses caused by heating is crucial for LED development. In this paper, heat losses in phosphor-converted LEDs (hereinafter chips) during spectrum conversion are estimated. The limit values of the luminous efficacy for white LEDs are evaluated.

Язык оригиналаАнглийский
Название основной публикацииAdvanced Materials in Technology and Construction, AMTC 2015: Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction"
Подзаголовок основной публикацииProceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction"
ИздательAmerican Institute of Physics Inc.
Том1698
ISBN (электронное издание)9780735413450
DOI
СостояниеОпубликовано - 15 янв 2016
Событие2nd All-Russian Scientific Conference of Young Scientists on Advanced Materials in Technology and Construction, AMTC 2015 - Tomsk, Российская Федерация
Продолжительность: 6 окт 20159 окт 2015

Конференция

Конференция2nd All-Russian Scientific Conference of Young Scientists on Advanced Materials in Technology and Construction, AMTC 2015
СтранаРоссийская Федерация
ГородTomsk
Период6.10.159.10.15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Цитировать

    Lisitsyn, V. M., Lukash, V. S., Stepanov, S. A., & Yangyang, J. (2016). White LEDs with limit luminous efficacy. В Advanced Materials in Technology and Construction, AMTC 2015: Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction": Proceedings of the II All-Russian Scientific Conference of Young Scientists "Advanced Materials in Technology and Construction" (Том 1698). [060008] American Institute of Physics Inc.. https://doi.org/10.1063/1.4937863