TY - JOUR
T1 - Isotropic-carrier-transport perovskite single crystal enables high-photoresponsivity solar-blind photodetectors for selective flame monitoring
AU - Zhang, Mengyao
AU - Wang, Fei
AU - Ma, Zhuangzhuang
AU - Yang, Dongwen
AU - Ma, Jingli
AU - Ji, Xinzhen
AU - Wang, Meng
AU - Li, Lejin
AU - Jiang, Huifang
AU - Dun, Conghui
AU - Yang, Ruoting
AU - Han, Yanbing
AU - Jia, Mochen
AU - Chen, Xu
AU - Tian, Yongtao
AU - Zhang, Jibin
AU - Li, Ying
AU - Li, Xinjian
AU - Shi, Zhifeng
N1 - Publisher Copyright:
© The Author(s) 2026.
PY - 2026/12
Y1 - 2026/12
N2 - Low-dimensional halide perovskites are promising candidates for solar-blind ultraviolet photodetectors. However, simultaneously achieving high photoresponsivity and low dark current remains challenging, due to the restricted transport and collection of photogenerated carriers caused by strong electronic localization. Here, guided by theoretical calculations of electronic structures, we report a solar-blind family of CsCdCl3 perovskite single crystals, which features a 3D structural framework, delivering high carrier mobility of 7.54 cm2V−1 s−1 and a long carrier diffusion length of 6.96 μm. These achievements stem from the 3D electronic structure, enabling balanced carrier effective mass isosurfaces and enhanced band dispersion. CsCdCl3-based solar-blind photodetectors yield a photoresponsivity of 35.4 A W−1 and dark current of 1.0 × 10−12 A. Moreover, the devices demonstrate a narrowband spectral response of only 20 nm with a spectral-rejection ratio of 1.96 × 103, which enables spectral-selectivity flame detection, distinguishing various types of flames and showcasing potential in offshore oil flame monitoring.
AB - Low-dimensional halide perovskites are promising candidates for solar-blind ultraviolet photodetectors. However, simultaneously achieving high photoresponsivity and low dark current remains challenging, due to the restricted transport and collection of photogenerated carriers caused by strong electronic localization. Here, guided by theoretical calculations of electronic structures, we report a solar-blind family of CsCdCl3 perovskite single crystals, which features a 3D structural framework, delivering high carrier mobility of 7.54 cm2V−1 s−1 and a long carrier diffusion length of 6.96 μm. These achievements stem from the 3D electronic structure, enabling balanced carrier effective mass isosurfaces and enhanced band dispersion. CsCdCl3-based solar-blind photodetectors yield a photoresponsivity of 35.4 A W−1 and dark current of 1.0 × 10−12 A. Moreover, the devices demonstrate a narrowband spectral response of only 20 nm with a spectral-rejection ratio of 1.96 × 103, which enables spectral-selectivity flame detection, distinguishing various types of flames and showcasing potential in offshore oil flame monitoring.
UR - https://www.scopus.com/pages/publications/105050276791
U2 - 10.1038/s41467-026-76846-0
DO - 10.1038/s41467-026-76846-0
M3 - Article
C2 - 42733012
AN - SCOPUS:105050276791
SN - 2041-1723
VL - 17
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 9779
ER -