Highly Conductive p-Type Transparent Conducting Electrode with Sulfur-Doped Copper Iodide
SCIE
SCOPUS
- Title
- Highly Conductive p-Type Transparent Conducting Electrode with Sulfur-Doped Copper Iodide
- Authors
- Ahn, Kyunghan; Kim, Ga Hye; Kim, Se-Jun; Kim, Jihyun; Ryu, Gi-Seong; Lee, Paul; Ryu, Byungki; Cho, Jung Young; Kim, Yong-Hoon; Kang, Joohoon; Kim, Hyungjun; Noh, Yong-Young; Kim, Myung-Gil
- Date Issued
- 2022-12
- Publisher
- American Chemical Society
- Abstract
- Although n-type transparent conductors have been commercialized with high optical transmittance and electrical conductivity, the realization of their p-type counterparts has been a challenging problem. Here, we report the synthesis of a highly conductive transparent p-type sulfur-doped CuI (CuI:S) thin film using a liquid-iodination method with a thiol additive. The CuI:S film shows a remarkably high electrical conductivity of 511 S cm-1 with an optical transmittance of greater than 80%. Furthermore, additional hole doping of CuI:S with H2O2 treatment improves the electrical conductivity to 596 S cm-1. Consequently, CuI:S exhibits a record-high figure of merit (FOM) value of 63,000 M C2-1 (73,000 M C2-1 with H2O2 treatment), which is similar to 370% (similar to 430% with H2O2 treatment) higher than the previously reported record high FOM value. The highly conducting CuI:S electrode is successfully applied as transparent conducting electrodes of the organic light-emitting diode and transparent p-type thin-film transistor. The liquid-iodination chemical method with unconventional control of the reaction parameters can be generalized to produce high-quality metal halide thin films, allowing them to be applicable for transparent electronics and optoelectronics.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/116025
- DOI
- 10.1021/acs.chemmater.2c02603
- ISSN
- 0897-4756
- Article Type
- Article
- Citation
- Chemistry of Materials, vol. 34, no. 23, page. 10517 - 10527, 2022-12
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