Stability improvement of Cu(ii)-doped ZnS/ZnO photodetectors prepared with a facile solution-processing method

Po Hsuan Hsiao, Ta Cheng Wei, Chia Yun Chen

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

The main challenge of ZnO-based photodetectors is correlated with the difficulty of achieving both high photodetection performance and good environmental stability due to the deteriorated effect of photocorrosion under light illumination. Here, we presented the potential solution by applying Cu2+-doped ZnS as protective coatings on ZnO nanorods based on solution synthesis, where the systematic investigations on such core/shell nanostructures were performed by conducting crystallographic, morphological, compositional, photoluminescent, and light-absorption characterizations. In addition, the designed Cu2+-doped ZnS/ZnO-based photodetector demonstrated the substantial improvement of the specific detectivities reaching 99.3 × 1012 and 127.2 × 1012 cm Hz1/2 W-1 under the light illuminations of 365 nm and 420 nm, which were more than 22 times and 45 times beyond those of bare ZnO, respectively. It should be noted that the improved environmental stability for long-term utilization was revealed, where the photoresponsivity was sustained to be above 95.4% for lasting 60 days. Significantly, the present study provided a facile approach to advance the development of high-performance, broadband and reliable photodetector designs.

原文English
頁(從 - 到)311-318
頁數8
期刊Inorganic Chemistry Frontiers
8
發行號2
DOIs
出版狀態Published - 2021 1月 21

All Science Journal Classification (ASJC) codes

  • 無機化學

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