White LEDs with limit luminous efficacy; AIP Conference Proceedings; Vol. 1698 : Advanced Materials in Technology and Construction, AMTC-2015

White LEDs with limit luminous efficacy

Detaylı Bibliyografya
Parent link:AIP Conference Proceedings
Vol. 1698 : Advanced Materials in Technology and Construction, AMTC-2015.— 2016.— [050002 , 8 p.]
Müşterek Yazar: Национальный исследовательский Томский политехнический университет (ТПУ) Институт физики высоких технологий (ИФВТ) Кафедра лазерной и световой техники (ЛиСТ)
Diğer Yazarlar: Lisitsyn V. M. Viktor Mikhailovich, Lukash V. S. Vitaly Sergeevich, Stepanov S. A. Sergey Aleksandrovich, Ju Yanyan
Özet:Title screen
In most promising widespread gallium nitride based LEDs emission is generated in the blue spectral region with a maximum at about 450 nm 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.
Режим доступа: по договору с организацией-держателем ресурса
Dil:İngilizce
Baskı/Yayın Bilgisi: 2016
Konular:
электронный ресурс
труды учёных ТПУ
Online Erişim:http://dx.doi.org/10.1063/1.4937863
Materyal Türü: Elektronik Kitap Bölümü
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=647762

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