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journal article·2023-04

Centimeter‐Scale PdS2 Ultrathin Films with High Mobility and Broadband Photoresponse

Kun He, Weiting Xu, Jingmei Tang, Yuan Lu, Chen Yi, Bailing Li, Hongzhou Zhu, Hongmei Zhang, Xiaohui Lin, Ya Feng, Manli Zhu, Jingru Shen, Mianzeng Zhong, Bo Li, Xidong Duan

Small· Volume 19· Issue 17
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Source abstract

Abstract

Abstract 2D materials with mixed crystal phase will lead to the nonuniformity of performance and go against the practical application. Therefore, it is of great significance to develop a valid method to synthesize 2D materials with typical stoichiometry. Here, 2D palladium sulfides with centimeter scale and uniform stoichiometric ratio are synthesized via controlling the sulfurization temperature of palladium thin films. The relationship between sulfurization temperature and products is investigated in depth. Besides, the high‐quality 2D PdS2 films are synthesized via sulfurization at the temperature of 450–550 °C, which would be compatible with back‐end‐of‐line processes in semiconductor industry with considering of process temperature. The PdS2 films show an n‐type semiconducting behavior with high mobility of 10.4 cm2 V−1 s−1. The PdS2 photodetector presents a broadband photoresponse from 450 to 1550 nm. These findings provide a reliable way to synthesizing high‐quality and large‐area 2D materials with uniform crystal phase. The result suggests that 2D PdS2 has significant potential in future nanoelectronics and optoelectronic applications.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: 2D Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hunan Provincial Key Laboratory of Two‐Dimensional Materials Advanced Semiconductor Technology and Application Engineering Research Center of Ministry of Education of China School of Physics and Electronics Changsha Semiconductor Technology and Application Innovation Research Institute College of Semiconductors (College of Integrated Circuits) Hunan University Changsha 410082 China

State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China

School of Materials Science and Energy Engineering Foshan University Foshan 528000 China

School of Physics and Electronics Central South University Changsha 410083 China

Research Institute of Hunan University in Chongqing Chongqing 401120 China

Shenzhen Research Institute of Hunan University Shenzhen 518063 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Chongqing

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