High brightness silicon nanocrystal white light-emitting diode with luminance of 2060 cd/m

Autor: Yu-Chen, Zhang, Zhi-Yuan, Yu, Xia-Yan, Xue, Fei-Long, Wang, Shuai, Li, Xi-Yuan, Dai, Li, Wu, Shu-Yu, Zhang, Song-You, Wang, Ming, Lu
Rok vydání: 2021
Zdroj: Optics express. 29(21)
ISSN: 1094-4087
Popis: High brightness Si nanocrystal white light-emitting diodes (WLED) based on differentially passivated silicon nanocrystals (SiNCs) are reported. The active layer was made by mixing freestanding SiNCs with hydrogen silsesquioxane, followed by annealing at moderately high temperatures, which finally led to a continuous spectral light emission covering red, green and blue regimes. The photoluminescence quantum yield (PLQY) of the active layer was 11.4%. The SiNC WLED was composed of a front electrode, electron transfer layer, front charge confinement layer, highly luminescent active layer, rear charge confinement layer, hole transfer layer, textured p-type Si substrate and aluminum rear electrode from top to bottom. The peak luminance of the SiNC WLED achieved was 2060 cd/m
Databáze: OpenAIRE