Impact of Sb<sub>2</sub>Se<sub>3</sub> Annealing on the Photoresponse of TiO<sub>2</sub>/Sb<sub>2</sub>Se<sub>3</sub>/Si Back-to-Back Photodiodes
Vision sensors utilizing <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{TiO}_{2} / \text{Sb}_{2} \text{Se}_{3} / \text{Si}$</tex> back-to-back photodiodes demonstrate the ability to rapidly enhance image quality. However, the performance of the back-toback photodiodes still requires improvement. Here, we show that raising the annealing temperature of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$\text{Sb}_{2} \text{Se}_{3}$</tex> from 250 to <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$350{}^{\circ} \mathrm{C}$</tex> results in a 67 -fold increase in photocurrent density. Results indicate that the reduced series resistance in the photodiodes contributes to this enhancement. This work offers a practical approach to enhance the performance of back-to-back photodiodes.
Authors
- Bangsen Ouyang
- Yang Chai (ORCID: https://orcid.org/0000-0002-8943-0861)
- Jialiang Wang (ORCID: https://orcid.org/0000-0003-0199-3094)
Institutions
- Hong Kong Polytechnic University (HK)
Publication Details
- Published
- 2025-03-09
- DOI
- https://doi.org/10.1109/edtm61175.2025.11041610
- Primary Topic
- Chalcogenide Semiconductor Thin Films
- Type
- article
- Field-Weighted Citation Impact
- 0.00