Abstract

Perovskite ${\rm{CsPbB}}{{\rm{r}}_3}$ quantum dot (QD) glasses doping ${\rm{C}}{{\rm{u}}^{2 +}}$ are reported for excellent long-wavelength-pass filters. Transmittance, optical density (OD), photoluminescence (PL), PL excitation, and PL decay are used to investigate filter properties and the quenching mechanism. At low ${\rm{C}}{{\rm{u}}^{2 +}}$ molar concentrations of 0%, 0.0025%, 0.005%, and 0.01%, the filters exhibit good properties in transmittance and OD. Transition wavelengths are 518, 513, 513, and 512 nm, respectively. The shape and position of transmittance and OD are almost not changed. As ${\rm{C}}{{\rm{u}}^{2 +}}$ concentration increases, PL intensity is monotonously quenched. PL decay is obviously faster. The quenching mechanism is dynamic quenching, which is electron transfer from QDs to ${\rm{C}}{{\rm{u}}^{2 +}}$. In comparison with the initial intensity, the intensity decreases by factors of 7.6, 12.8, and 18.8. Oxidation and reduction atmospheres are introduced, and the dynamic quenching mechanism is further confirmed. At high ${\rm{C}}{{\rm{u}}^{2 +}}$ concentrations of 0.013%–0.02%, the quenching mechanism is static quenching. Double-anion ${\rm{CsPb}}{({\rm{Cl}}/{\rm{Br}})_3}$ QD glasses of different ${\rm{C}}{{\rm{u}}^{2 +}}$ concentrations extend the operation wavelength to the blue light region. For ${\rm{C}}{{\rm{u}}^{2 +}}$ concentrations of 0%, 0.005%, and 0.01%, the transition wavelengths are 470, 472, and 473 nm for ${\rm{CsPb}}{({\rm{Cl}}/{\rm{Br}})_3}$ (NaCl as Cl source) QD glasses, and 430, 426, and 445 nm for ${\rm{CsPb}}{({\rm{Cl}}/{\rm{Br}})_3}$ (${\rm{PbC}}{{\rm{l}}_2}$ as Cl source) QD glasses, respectively.

© 2022 Optica Publishing Group

Rapid room temperature synthesis of Mn-doped perovskite quantum dots for white-light-emitting diodes

Longwen Yang, Aochen Du, Xingke Zheng, Yun Ye, Enguo Chen, Sheng Xu, and Tailiang Guo
J. Opt. Soc. Am. B 41(3) 809-819 (2024)

Investigation of CsPbBr₃ films with controllable morphology and its influence on the photovoltaic properties for carbon-based planar perovskite solar cells

Fei Zhao, Yixin Guo, Jiahua Tao, Zeng Li, Jinchun Jiang, and Junhao Chu
Appl. Opt. 59(18) 5481-5486 (2020)

Tunable luminescent CsPb₂Br₅ nanoplatelets: applications in light-emitting diodes and photodetectors

Ceng Han, Cunlong Li, Zhigang Zang, Ming Wang, Kuan Sun, Xiaosheng Tang, and Jihe Du
Photon. Res. 5(5) 473-480 (2017)

Optical fluorescent sensor based on perovskite QDs for nitric oxide gas detection

Divyanshu Kumar, Rispandi Mesin, and Cheng-Shane Chu
Appl. Opt. 62(12) 3176-3181 (2023)

Mid-IR spectroscopy of Er³⁺ doped low-phonon CsCdCl₃ and CsPbCl₃ crystals

Ei Ei Brown, Zackery D. Fleischman, Jason McKay, Uwe Hommerich, Al Amin Kabir, Jazmine Riggins, Sudhir Trivedi, and Mark Dubinskii
J. Opt. Soc. Am. B 40(1) A1-A8 (2023)