Recent research on the luminous mechanism, synthetic strategies, and applications of CuInS2 quantum dots
Inorganic Chemistry Frontiers Pub Date: 2020-11-24 DOI: 10.1039/D0QI01228A
Abstract
Copper indium sulfide colloidal quantum dots (CuInS2 QDs) have drawn lots of attention in recent years, due to their traits of nontoxic elements, low synthesis cost, and easily tunable bandgap. CuInS2 is a direct semiconductor with the bulk bandgap between 1.45 eV and 1.53 eV. The emitting wavelength of CuInS2 QDs can be tuned by their size or composition, covering a range from visible to near-infrared (NIR). Besides, CuInS2 QDs possess a high absorption coefficient (～105 cm?1) which makes it an interesting candidate for solar energy conversion applications. However, as a kind of versatile “green” materials, the property of CuInS2 QDs is still at a low level compared to well-studied Cd-based or InP QDs. In this review, we first discuss the research of the luminescence mechanisms of CuInS2 QDs. Then, we summarize the methods to synthesize CuInS2 QDs and the strategies to improve their luminous performances and stability developed recently. Also, we introduce the potential applications of CuInS2 QDs in light-emitting devices, solar energy conversion, and the biomedical field. Finally, we propose the existing issues and further prospects of CuInS2 QDs.
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Journal Name：Inorganic Chemistry Frontiers
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CAS no.: 89640-58-4
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