Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
Small. 2010 Aug 2;6(15):1577-88. doi: 10.1002/smll.201000144.
In response to the demands for energy and the concerns of global warming and climate change, energy efficient and environmentally friendly solid-state lighting, such as white light-emitting diodes (WLEDs), is considered to be the most promising and suitable light source. Because of their small size, high efficiency, and long lifetime, WLEDs based on colloidal semiconductor nanocrystals (or quantum dots) are emerging as a completely new technology platform for the development of flat-panel displays and solid-state lighting, exhibiting the potential to replace the conventionally used incandescent and fluorescent lamps. This replacement can cut the ever-increasing level of energy consumption, solve the problem of rapidly depleting fossil fuel reserves, and improve the quality of the global environment. In this review, the recent progress in semiconductor-nanocrystals-based WLEDs is highlighted, the different approaches for generating white light are compared, and the benefits and challenges of the solid-state lighting technology are discussed.
为了满足能源需求并应对全球变暖和气候变化的担忧，节能且环保的固态照明，例如白光发光二极管（WLED），被认为是最有前途和最合适的光源。基于胶体半导体纳米晶体（或量子点）的 WLED 具有体积小、效率高、寿命长等优点，正在成为平板显示器和固态照明的全新技术平台，有望取代传统的白炽灯泡和荧光灯。这种替代可以降低不断增长的能源消耗水平，解决化石燃料储备迅速枯竭的问题，并改善全球环境质量。本综述重点介绍了基于半导体纳米晶体的 WLED 的最新进展，比较了产生白光的不同方法，并讨论了固态照明技术的优势和挑战。
