基于超小 CdSe 纳米晶电致发光的白光发光二极管。

White light-emitting diodes based on ultrasmall CdSe nanocrystal electroluminescence.

机构信息

Department of Chemistry, Vanderbilt University,Station B 351824, Nashville, Tennessee 37235, USA.

出版信息

Nano Lett. 2010 Feb 10;10(2):573-6. doi: 10.1021/nl903515g.

PMID:20063863

Abstract

We report white light-emitting diodes fabricated with ultrasmall CdSe nanocrystals, which demonstrate electroluminescence from a size of nanocrystals (<2 nm) previously thought to be unattainable. These LEDs have excellent color characteristics, defined by their pure white CIE color coordinates (0.333, 0.333), correlated color temperatures of 5461-6007 K, and color rendering indexes as high as 96.6. The effect of high voltage on the trap states responsible for the white emission is also described.

摘要

我们报告了使用超小 CdSe 纳米晶体制造的白光发光二极管，这些二极管展示了之前认为无法实现的纳米晶体（<2nm）的电致发光。这些 LED 具有出色的颜色特性，由其纯净的 CIE 颜色坐标（0.333，0.333）、相关色温 5461-6007K 和高达 96.6 的显色指数定义。还描述了高压对负责白色发射的陷阱态的影响。