As global warming, energy shortages, and environment pollution have intensified, low-carbon and energy-saving lighting technology has attracted great attention worldwide. Light emitting diodes (LEDs) have been around for decades and are considered to be the most ideal lighting technology currently due to their high luminescence efficiency (LE) and long lifespan. Besides, along with the development of modern technology, lighting technologies with higher performance and more functions are desired. Perovskite based LEDs (PeLEDs) have recently emerged as ideal candidates for lighting technology owing to the extraordinary photoelectric properties of perovskite, such as high photoluminescence quantum yields (PLQYs), easy wavelength tuning, and low-cost synthesis. Herein, we open this review by introducing the background of white LEDs (WLEDs), including their light-emitting mechanism, typical characteristics, and key indicators in applications. Then, four main approaches to fabricate WLEDs are discussed and compared. After that, in accordance with the four categories, we focus on the recent progress of white PeLEDs (Pe-WLEDs), followed by the challenges and opportunities for Pe-WLEDs in practical application. Meanwhile, some pertinent countermeasures to their challenges are put forward. Finally, the development promise of Pe-WLEDs is explored.
Perovskite White Light Emitting Diodes: Progress, Challenges, and Opportunities.
Jiawei Chen,Hengyang Xiang,Jian Wang,Run Wang,Yan Li,Qingsong Shan,Xiaobao Xu,Yuhui Dong,Changting Wei,H. Zeng
Published 2021 in ACS Nano
ABSTRACT
PUBLICATION RECORD
- Publication year
2021
- Venue
ACS Nano
- Publication date
2021-11-10
- Fields of study
Medicine, Materials Science, Physics, Engineering
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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