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Cojocaru L, Jena AK, Yamamiya M, Numata Y, Ikegami M, Miyasaka T. Solution-Crystalized AgBiS 2 Films for Solar Cells Generating a Photo-Current Density Over 31 mA cm -2. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2406998. [PMID: 39382171 DOI: 10.1002/advs.202406998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Revised: 09/23/2024] [Indexed: 10/10/2024]
Abstract
In response to the toxic heavy metal absorbers in perovskite solar cells (PSCs), this work focuses on the development of an environmentally friendly simple solution-processed infrared (IR) absorber. In this work, a simple solution-crystallized IR-absorbing AgBiS2 film is reported by spin-coating silver, bismuth nitrates, and thiourea dissolved in dimethylformamide (DMF) to produce thick AgBiS2 film. Extensive optimization of the precursor concentrations thicknesses and conductive substrates used allow for obtaining 250 nm AgBiS2 film with different crystal sizes. When applied as an absorber in solar cells, solution-crystalized AgBiS2 thick film delivers an extraordinarily high current density of over 31 mA cm-2. The devices show high stability under continuous 100 mW cm-2 illumination and when stored in the dark for more than six months. When the AgBiS2 layer is fabricated in a gradient fashion combining one layer of 0.25 m and three layers of 0.5 m precursor concentrations, the efficiency of 5.15% is registered which is the highest reported for the simple solution-crystallized AgBiS2 films.
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Affiliation(s)
- Ludmila Cojocaru
- Toin University of Yokohama, Kanagawa, 225-8503, Japan
- Komaba Institute for Science, The University of Tokyo, Tokyo, 153-8904, Japan
| | - Ajay Kumar Jena
- Komaba Institute for Science, The University of Tokyo, Tokyo, 153-8904, Japan
| | | | - Youhei Numata
- Toin University of Yokohama, Kanagawa, 225-8503, Japan
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Xiao Y, Wang H, Awai F, Shibayama N, Kubo T, Nakazaki J, Segawa H. Halide-ligand-dependent performance of AgBiS 2 nanocrystal/ZnO heterojunction solar cells. CHEM LETT 2022. [DOI: 10.1246/cl.220331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yun Xiao
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8904, Japan
| | - Haibin Wang
- Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku,Tokyo 153-8902, Japan
| | - Fumiyasu Awai
- Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku,Tokyo 153-8902, Japan
| | - Naoyuki Shibayama
- Department of Engineering, Toin University of Yokohama, 1614 Kurgane-cho, Aoba, Yokohama, Kanagawa 225-8503, Japan
| | - Takaya Kubo
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8904, Japan
| | - Jotaro Nakazaki
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8904, Japan
| | - Hiroshi Segawa
- Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8904, Japan
- Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1, Komaba, Meguro-ku,Tokyo 153-8902, Japan
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