All‐Inorganic Bismuth‐Based Perovskite Quantum Dots with Bright Blue Photoluminescence and Excellent Stability
Wuhan National Laboratory for Optoelectronics · Huazhong University of Science and Technology · +1 more institution
Abstract
Abstract Lead halide perovskite quantum dots (QDs) possess color‐tunable and narrow‐band emissions and are very promising for lighting and display applications, but they suffer from lead toxicity and instability. Although lead‐free Bi‐based and Sn‐based perovskite QDs (CsSnX 3 , Cs 2 SnX 6 , and (CH 3 NH 3 ) 3 Bi 2 X 9 ) are reported, they all show low photoluminescence quantum yield (PLQY) and poor stability. Here, the synthesis of Cs 3 Bi 2 Br 9 perovskite QDs with high PLQY and excellent stability is reported. Via a green and facile process using ethanol as the antisolvent, as‐synthesized Cs 3 Bi 2 Br 9 QDs show a blue emission at 410 nm with a PLQY up to 19.4%. The whole series of Cs 3 Bi 2 X 9 (X = Cl,…
Citation impact
- FWCI
- 23.53
- Percentile
- 100%
- References
- 55
Authors
16- MLMeiying Leng
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- YYYing Yang
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- KZKai Zeng
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- ZCZhengwu Chen
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- ZTZhifang Tan
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
Topics & keywords
- Photoluminescence
- Materials science
- Perovskite (structure)
- Quantum dot
- Passivation
- Quantum yield
- Halide
- Optoelectronics