High Quantum Yield Blue Emission from Lead-Free Inorganic Antimony Halide Perovskite Colloidal Quantum Dots
Wuhan National Laboratory for Optoelectronics · Huazhong University of Science and Technology
Abstract
Colloidal quantum dots (QDs) of lead halide perovskite have recently received great attention owing to their remarkable performances in optoelectronic applications. However, their wide applications are hindered from toxic lead element, which is not environment- and consumer-friendly. Herein, we utilized heterovalent substitution of divalent lead (Pb2+) with trivalent antimony (Sb3+) to synthesize stable and brightly luminescent Cs3Sb2Br9 QDs. The lead-free, full-inorganic QDs were fabricated by a modified ligand-assisted reprecipitation strategy. A photoluminescence quantum yield (PLQY) was determined to be 46% at 410 nm, which was superior to that of other reported halide perovskite QDs. The PL enhancement…
Citation impact
- FWCI
- 30.84
- Percentile
- 100%
- References
- 53
Authors
8- JZJian ZhangCorresponding
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- YYYing Yang
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- HDHui Deng
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- UFUmar Farooq
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
- XYXiaokun Yang
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology
Topics & keywords
- Perovskite (structure)
- Photoluminescence
- Quantum dot
- Quantum yield
- Halide
- Materials science
- Exciton
- Luminescence
- Affordable and clean energy