Integration of Environmental Friendly Perovskites for High-efficiency White Light-emitting Diodes

Autor: Hanxin Liu, Chun Sun, Zhiyuan Gao, Chong Geng, Shuangshuang Shi, Le Wang, Sijing Su, Wengang Bi
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Nanoscale Research Letters, Vol 14, Iss 1, Pp 1-9 (2019)
Druh dokumentu: article
ISSN: 1931-7573
1556-276X
DOI: 10.1186/s11671-019-2980-4
Popis: Abstract Perovskite quantum dots (QDs) have been widely used in white light-emitting diodes (WLEDs), due to their high quantum yield (QY), tunable bandgap, and simple preparation. However, the red-emitting perovskite QDs are usually containing iodine (I), which is not stable under continuous light irradiation. Herein, perovskite-based WLED is fabricated by lead-free bismuth (Bi)-doped inorganic perovskites Cs2SnCl6 and less-lead Mn-doped CsPbCl3 QDs, which emits white light with color coordinates of (0.334, 0.297). The Bi-doped Cs2SnCl6 and Mn-doped CsPbCl3 QDs both show excellent stability when kept in the ambient air. As benefits from this desired characteristic, the as-prepared WLED shows excellent stability along with operating time. These results can promote the application of inorganic perovskite QDs in the field of WLEDs.
Databáze: Directory of Open Access Journals
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