TY - JOUR
T1 - Broadband-Detection and Low-Operating-Voltage Photodetectors Based on Metal Oxide/Perovskite Quantum Dot Heterojunctions
AU - Ge, Dalong
AU - Xu, Jiaqi
AU - Tian, Tian
AU - Wang, Xianglong
AU - Zhang, Yu
AU - Xu, Feiyang
AU - Shao, Baochuan
AU - Chen, Qi
AU - Wei, Mengyao
AU - Qin, Yuanbin
AU - Wang, Fengyun
N1 - Publisher Copyright:
© 2025 American Chemical Society.
PY - 2025/5/8
Y1 - 2025/5/8
N2 - To achieve comprehensive environmental monitoring, photodetectors with broad operational wavelength range are crucial for capturing realistic wide-spectrum signals and supporting integrated system operations. This study presents a high-performance photodetector based on InSrO nanofiber (NF)/CsPbBr3 quantum dot (QD) heterojunctions, achieving broadband detection (230-500 nm) and ultralow operating voltage (0.05 V). By synergistically combining the UV absorption of InSrO NFs with the visible-light sensitivity of CsPbBr3 QDs, the device exhibits a responsivity of 6.88 A·W-1 and a detectivity of 6.39 × 1014 Jones. Systematic analysis reveals that the heterointerface facilitates efficient charge separation, while the 1D nanofiber architecture enhances directional carrier transport. Notably, the photodetectors can retain 95% of the initial photocurrent after 15 days, demonstrating exceptional stability. This work can advance the development of energy-efficient optoelectronic devices for environmental monitoring and optical communications applications.
AB - To achieve comprehensive environmental monitoring, photodetectors with broad operational wavelength range are crucial for capturing realistic wide-spectrum signals and supporting integrated system operations. This study presents a high-performance photodetector based on InSrO nanofiber (NF)/CsPbBr3 quantum dot (QD) heterojunctions, achieving broadband detection (230-500 nm) and ultralow operating voltage (0.05 V). By synergistically combining the UV absorption of InSrO NFs with the visible-light sensitivity of CsPbBr3 QDs, the device exhibits a responsivity of 6.88 A·W-1 and a detectivity of 6.39 × 1014 Jones. Systematic analysis reveals that the heterointerface facilitates efficient charge separation, while the 1D nanofiber architecture enhances directional carrier transport. Notably, the photodetectors can retain 95% of the initial photocurrent after 15 days, demonstrating exceptional stability. This work can advance the development of energy-efficient optoelectronic devices for environmental monitoring and optical communications applications.
UR - https://www.scopus.com/pages/publications/105003724337
U2 - 10.1021/acs.jpclett.5c00734
DO - 10.1021/acs.jpclett.5c00734
M3 - Article
C2 - 40279190
AN - SCOPUS:105003724337
SN - 1948-7185
VL - 16
SP - 4449
EP - 4455
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
IS - 18
ER -