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April 10, 2026ACS Applied Nano Materials

3D Heterojunction of t-Se Encapsulated SnS 2 Nanoflower Arrays for Broadband Self-Powered Photodetection

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Authors

LZLianchen ZhangRZRunlong ZhaiYCYaru Cheng

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Overview

This work demonstrates a novel 3D heterojunction to enhance photocurrent in photodetectors, suggesting improved device efficiency.

Key Points

  • To enhance the zero-bias photocurrent density and responsivity of photoelectrochemical photodetectors.
  • Constructed a 3D heterojunction of t-Se-coated SnS2 nanoflower arrays.
  • Utilized hydrothermal approach followed by electrochemical deposition.
  • Tested the device under white light illumination to assess photocurrent density.
  • Achieved a photocurrent density of 1 mA/cm2 under white light illumination.
  • Photocurrent density was 13.3 times and 200 times higher than t-Se films and SnS2 nanosheet arrays, respectively.
  • Responsivity enhanced by factors of 6.3 and 65.7 at optimal wavelengths of 400 nm and 600 nm.
  • Demonstrated a broadband response (400∼900 nm) with a response time of less than 40 ms.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/69d893eb6c1944d70ce04ed4https://doi.org/10.1021/acsanm.6c00519
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