Solution-processed low-toxic CuZnInSSe colloidal quantum dots photodiodes and image sensors

Chen, Tong, Lou, Qiang, Stewart, Aisling, Ming, Wenlong ORCID: https://orcid.org/0000-0003-1780-7292, Hou, Bo ORCID: https://orcid.org/0000-0001-9918-8223 and Zhou, Hang 2025. Solution-processed low-toxic CuZnInSSe colloidal quantum dots photodiodes and image sensors. Presented at: 2025 IEEE 20th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), Zhuhai, China, 11-14 May 2025. 2025 IEEE 20th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS). IEEE, pp. 159-164. 10.1109/nems67320.2025.11170048

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Abstract

Due to the requirement of environmentally friendly application of electronic devices, colloidal quantum dots (QDs) without heavy-metal elements have gained more and more attention and study. Herein, a kind of low-toxic QDs photodiode is presented. By optimizing the surface ligands of QDs and the charge transport layers of the device, improved properties were obtained, including low dark current density, fast photoresponse speed and good performance stability in air. Furthermore, image sensing was achieved by pixels array composed of the low-toxic QDs photodiodes and amorphous silicon thin-film transistors to demonstrate the image sensing potential.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Schools > Engineering
Publisher:	IEEE
ISSN:	2474-3747
Date of Acceptance:	29 September 2025
Last Modified:	03 Nov 2025 14:47
URI:	https://orca.cardiff.ac.uk/id/eprint/181707

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