TY - JOUR
T1 - Biocompatible Perovskite Nanocrystals with Enhanced Stability for White Light-Emitting Diodes
AU - Zhang, Rui
AU - Yan, Ao
AU - Liu, Haiyun
AU - Lv, Zehua
AU - Hong, Mengqing
AU - Qin, Zhenxing
AU - Ren, Weijie
AU - Jiang, Zhaoyi
AU - Li, Mingkai
AU - Ho, Johnny C.
AU - Guo, Pengfei
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/7/3
Y1 - 2024/7/3
N2 - Recently emerged lead halide perovskite CsPbX3 (X = Cl, Br, and I) nanocrystals (PNCs) have attracted tremendous attention due to their excellent optical properties. However, the poor water stability, unsatisfactory luminescence efficiency, disappointing lead leakage, and toxicity have restricted their practical applications in photoelectronics and biomedical fields. Herein, a controllable encapsulated strategy is investigated to realize CsPbX3 PNCs/PVP @PMMA composites with superior luminescence properties and excellent biocompatibility. Additionally, the synthesized CsPbBr3 and CsPbBr0.6I2.4 PNCs/PVP@PMMA structures exhibit green and red emissions with a maximal photoluminescence quantum yield (PLQY) of about 70.24% and 98.26%, respectively. These CsPbX3 PNCs/PVP@PMMA structures show high emission efficiency, excellent stability after water storage for 18 months, and low cytotoxicity at the PNC concentration at 500 μg mL-1. Moreover, white light-emitting diode (WLED) devices based on mixtures of CsPbBr3 and CsPbBr0.6I2.4 PNCs/PVP@PMMA perovskite structures are investigated, which exhibit excellent warm-white light emissions at room temperature. A flexible manipulation method is used to fabricate the white light emitters based on these perovskite composites, providing a fantastic platform for fabricating solid-state white light sources and full-color displays.
AB - Recently emerged lead halide perovskite CsPbX3 (X = Cl, Br, and I) nanocrystals (PNCs) have attracted tremendous attention due to their excellent optical properties. However, the poor water stability, unsatisfactory luminescence efficiency, disappointing lead leakage, and toxicity have restricted their practical applications in photoelectronics and biomedical fields. Herein, a controllable encapsulated strategy is investigated to realize CsPbX3 PNCs/PVP @PMMA composites with superior luminescence properties and excellent biocompatibility. Additionally, the synthesized CsPbBr3 and CsPbBr0.6I2.4 PNCs/PVP@PMMA structures exhibit green and red emissions with a maximal photoluminescence quantum yield (PLQY) of about 70.24% and 98.26%, respectively. These CsPbX3 PNCs/PVP@PMMA structures show high emission efficiency, excellent stability after water storage for 18 months, and low cytotoxicity at the PNC concentration at 500 μg mL-1. Moreover, white light-emitting diode (WLED) devices based on mixtures of CsPbBr3 and CsPbBr0.6I2.4 PNCs/PVP@PMMA perovskite structures are investigated, which exhibit excellent warm-white light emissions at room temperature. A flexible manipulation method is used to fabricate the white light emitters based on these perovskite composites, providing a fantastic platform for fabricating solid-state white light sources and full-color displays.
KW - excellent stability
KW - lead halide perovskites
KW - perovskite nanocrystals
KW - superior biocompatible
KW - white light-emitting diodes
UR - https://www.scopus.com/pages/publications/85196614603
U2 - 10.1021/acsami.4c06854
DO - 10.1021/acsami.4c06854
M3 - 文章
C2 - 38896470
AN - SCOPUS:85196614603
SN - 1944-8244
VL - 16
SP - 34167
EP - 34180
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 26
ER -