Fast and High-Performance Self-Powered Photodetector Based on the ZnO/Metal-Organic Framework Heterojunction

Yingyi Wang, Lin Liu, Yixiang Shi, Shengzhao Li, Fuqin Sun, Qifeng Lu, Yaochun Shen, Simin Feng*, Sujie Qin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Electrical conductive metal-organic frameworks (EC-MOFs) are emerging as an appealing class of highly tailorable electrically conducting materials with potential applications in optoelectronics. Here, we in situ grew nickel hexahydroxytriphenylene (Ni-CAT) on the surface of ZnO nanorods (NRs). The self-powered photodetectors (PDs) were fabricated with heterojunctions formed at the interface of ZnO NRs and Ni-CAT. With this, the built-in electric field (BEF) can effectively separate the photogenerated electron-hole pairs and enhance the photoresponse. We observe that the PDs based on hybrid ZnO/Ni-CAT with 3 h of growth time (ZnO/Ni-CAT-3) show good photoresponse (137 μA/W) with the fast rise (3 ms) and decay time (50 ms) under 450 nm light illumination without biased voltage. This work provides a facile and controllable method for the growth of the ZnO/Ni-CAT heterojunction with an effective BEF zone, which will benefit their optoelectronic applications.

Original languageEnglish
Pages (from-to)18236-18243
Number of pages8
JournalACS Applied Materials and Interfaces
Volume15
Issue number14
DOIs
Publication statusPublished - 12 Apr 2023

Keywords

  • electrical conductive metal−organic frameworks (EC-MOFs)
  • in situ growth
  • photodetector
  • p−n heterojunction
  • zinc oxide (ZnO)

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