Controllable synthesis of non-layered two-dimensional plate-like CuGaSe2 materials for optoelectronic devices. Issue 6 (18th January 2021)

• Record Type: Journal Article
• Authors: Feng, Wenling; Zhao, Yutong; Zhao, Di; Wang, Wenjian; Xia, Zenghao; Zheng, Xiaoxia; Wang, Xu; Wang, Weihua; Wang, Wenliang
• Is Part Of: RSC advances. Volume 11:Issue 6(2021)
• Page Start: 3673
• Page End: 3680
• Publication Date: 2021-01-18
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d0ra08662b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Non-layered two-dimensional CuGaSe2 materials with high light-harvesting and excellent optoelectronic properties have been first synthesized by a cation exchange strategy. Abstract : CuGaSe2 semiconductor materials, as an important member of the I–III–VI2 family, have sparked tremendous attention due to their fascinating structure-related properties and promising applications in solar energy storage and conversion. Nevertheless, the controllable preparation of two-dimensional (2D) CuGaSe2 structures is still a daunting challenge owing to the intrinsic non-layered crystal structure and inaccessible reactivity-matching of multiple reaction precursors, which will seriously impede the much deeper research progress on their properties and applications. Herein, non-layered 2D CuGaSe2 plates possessing high crystallinity, and uniform size and morphology have been first synthesized by a feasible cation exchange strategy. Because the fabrication of 2D CuGaSe2 crystals is rarely reported, a particular highlight is laid on the compositional analysis, structural characterization, and formation mechanism. Furthermore, the optical absorption and optoelectronic measurements reveal that the as-synthesized CuGaSe2 plates exhibit high light harvesting capacity and excellent photoelectric performance. This study opens up a new avenue for the feasible fabrication of non-layered CuGaSe2 plates possessing a high-quality crystalline structure and provides a promising candidate for the development of novel solar energy conversion and storage devices.