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Chenxu Kang Dr. Muhammad Ahsan Iqbal Dr. Suyun Zhang Xiaoliang Weng Yuting Sun Dr. Lu Qi Dr. Wei Tang Prof. Shuangchen Ruan Prof. Yu-Jia Zeng 《Chemistry (Weinheim an der Bergstrasse, Germany)》2022,28(64):e202201705
Two-dimensional conductive metal–organic frameworks (2D c-MOFs) are a family of highly tunable and electrically conducting materials that can be utilized in optoelectronics. A major issue of 2D c-MOFs for photodetection is their poor charge separation and recombination dynamics upon illumination. This study demonstrates a Cu3(HHTP)2/ZnO type-II heterojunction ultraviolet (UV) photodetector fabricated by layer-by-layer (LbL) deposition, in which the charge separation of photogenerated carriers is enhanced. At optimized MOF layer cycles, the device achieves a responsivity of 78.2 A/W and detectivity of 3.8×109 Jones at 1 V. Particularly, the device can be operated in the self-powered mode with an ultrafast response time of 70 μs, which is the record value for MOF-based photodetectors. In addition, even after 1000-time bending of 180°, the flexible device maintains stable performance. This flexible MOF-based UV photodetector with anti-fatigue and anti-bending properties provides strong implication to wearable optoelectronics. 相似文献
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