期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 29, 页码 11856-11860出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202004006
关键词
charge transport; flexible materials; metal-organic frameworks; mixed matrix membranes; semiconductors
资金
- National Natural Science Foundation of China [21825601, 21790374, 21806118, 21727801]
- National Supercomputing Center in Shenzhen
Semiconductive metal-organic frameworks (MOFs) have emerged in applications such as chemical sensors, electrocatalysts, energy storage materials, and electronic devices. However, examples of semiconductive MOFs within flexible electronics have not been reported. We present flexible X-ray detectors prepared by thermoplastic dispersal of a semiconductive MOF (SCU-13) through a commercially available polymer, poly(vinylidene fluoride). The flexible detectors exhibit efficient X-ray-to-electric current conversion with enhanced charge-carrier mobility and low trap density compared to pelleted devices. A high X-ray detection sensitivity of 65.86 mu CGy(air)(-1) cm(-2) was achieved, which outperforms other pelleted devices and commercial flexible X-ray detectors. We demonstrate that the MOF-based flexible detectors can be operated at multiple bending angles without a deterioration in detection performance. As a proof-of-concept, an X-ray phase contrast under bending conditions was constructed using a 5x5 pixelated MOF-based imager.
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