Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 48, Pages 33043-33050Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b12090
Keywords
heterojunction; thermal stability; photodetector; WS2; organic
Funding
- 973 Program [2014CB643600, 2014CB643503]
- National Natural Science Foundation of China [61405208, U1401244, 21374025, 21372053, 21572041, 51503050]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB12030200]
- Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS)
- State Key Laboratory of Luminescent Materials and Devices [2016-skllmd-05]
- Youth Association for Promoting Innovation (CAS)
- Center for Excellence in Nanoscience (CAS)
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Organic-based photodetectors (PDs) have great potential applications in next-generation portable, low-cost, large-area displays and optical communications. However, for practical applications, they are facing big challenges due to their instabilities in ambient environments, especially under high temperatures. Robust materials and device architectures are highly demanded to overcome the problem. In this report, we employed a donor conjugated polymer PThTPTI and realized thin-film PDs which can stably operate in ambient air under temperatures as high as 300 degrees C. By adding a discontinuous thin layer of WS2 beneath the PThTPTI film, the device photosensitivity is significantly enhanced without loss of the high thermal stability. This work provides new insights in designing novel and stable organic-based devices for future optoelectronic applications.
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