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Colloidal Synthesis, Optical Properties, and Hole Transport Layer Applications of Cu 2 BaSnS 4 (CBTS) Nanocrystals
- Colloidal Synthesis, Optical Properties, and Hole Transport Layer Applications of Cu 2 BaSnS 4 (CBTS) Nanocrystals
- Chakraborty, Rayan; Sim, Kyu Min; Shrivastava, Megha; Adarsh, K.V.; Chung, Dae Sung; Nag, Angshuman
- DGIST Authors
- Chung, Dae Sung
- Issue Date
- ACS Applied Energy Materials, 2(5), 3049-3055
- Article Type
- Author Keywords
- metal sulfides; Cu2BaSnS4 nanocrystals; colloidal semiconductor nanocrystals; ultrafast carrier dynamics; hole transport layer; photodiode
- SOLAR-CELLS; THIN-FILMS; DISSOLUTION; EFFICIENT; CU2ZNSNS4; PHOTODIODES
- Cu 2 BaSnS 4 (CBTS) is an emerging earth-abundant and environmentally benign semiconductor. However, there has been no prior report of colloidal CBTS nanocrystals. Here we developed a colloidal synthesis of CBTS nanocrystals by rational design. Photophysical properties of these nanocrystals are elucidated using photoluminescence and ultrafast transient absorption spectroscopy. Finally, thin films of CBTS nanocrystals grown at room temperature are used as the hole transport layer (HTL) in an organic photodiode yielding a high peak specific detectivity (>3.2 × 10 12 Jones) with low noise equivalent power (9.20 × 10 -14 W Hz 0.5 ). These results suggest that our colloidal CBTS nanocrystals have potential for optoelectronic applications. © 2019 American Chemical Society.
- American Chemical Society
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- Department of Energy Science and EngineeringPolymer Energy Materials Lab1. Journal Articles
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