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Li Y, Li R, Jia Z, Yu B, Yang Y, Bai S, Pollard M, Liu Y, Ma Y, Kampwerth H, Lin Q. Precursor Engineering of Solution-Processed Sb 2 S 3 Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308895. [PMID: 37875777 DOI: 10.1002/smll.202308895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Indexed: 10/26/2023]
Abstract
Antimony-based chalcogenides have emerged as promising candidates for next-generation thin film photovoltaics. Particularly, binary Sb2 S3 thin films have exhibited great potential for optoelectronic applications, due to the facile and low-cost fabrication, simple composition, decent charge transport and superior stability. However, most of the reported efficient Sb2 S3 solar cells are realized based on chemical bath deposition and hydrothermal methods, which require large amount of solution and are normally very time-consuming. In this work, Ag ions are introduced within the Sb2 S3 sol-gel precursors, and effectively modulated the crystallization and charge transport properties of Sb2 S3 . The crystallinity of the Sb2 S3 crystal grains are enhanced and the charge carrier mobility is increased, which resulted improved charge collection efficiency and reduced charge recombination losses, reflected by the greatly improved fill factor and open-circuit voltage of the Ag incorporated Sb2 S3 solar cells. The champion devices reached a record high power conversion efficiency of 7.73% (with antireflection coating), which is comparable with the best photovoltaic performance of Sb2 S3 solar cells achieved based on chemical bath deposition and hydrothermal techniques, and pave the great avenue for next-generation solution-processed photovoltaics.
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Affiliation(s)
- Yanyan Li
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
| | - Ruiming Li
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
| | - Zhenglin Jia
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
| | - Bin Yu
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
| | - Yujie Yang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
| | - Songxue Bai
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
| | - Michael Pollard
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, NSW 205, Australia
| | - Yong Liu
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
| | - Ye Ma
- Core Facility of Wuhan University, Wuhan University, Wuhan, Hubei, 430072, China
| | - Henner Kampwerth
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, New South Wales, NSW 205, Australia
| | - Qianqian Lin
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Hubei Luojia Laboratory, Wuhan University, Wuhan, Hubei, 430072, China
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Yao F, Li R, Jia Z, Bai S, Yang Y, Li Y, Xu Y, Fang G, Lin Q. Charge-Carrier Dynamics of Evaporated Bismuth-Based Chalcogenide Thin Films Probed with Time-Resolved Microwave Conductivity. J Phys Chem Lett 2023:5517-5523. [PMID: 37290010 DOI: 10.1021/acs.jpclett.3c00966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chalcogenide-based semiconductors are emerging as a set of highly promising candidates for optoelectronic devices, owing to their low toxicity, cost-effectiveness, exceptional stability, and tunable optoelectronic properties. Nonetheless, the limited understanding of charge recombination mechanisms and trap states of these materials is impeding their further development. To fill this gap, we conducted a comprehensive study of bismuth-based chalcogenide thin films and systematically investigated the influence of post-treatments via time-resolved microwave conductivity and temperature-dependent photoluminescence. The key finding in this work is that post-treatment with Bi could effectively enhance the crystallinity and charge-carrier mobility. However, the carrier density also increased significantly after the Bi treatment. On the contrary, post-treatment of evaporated Bi2S3 thin films with sulfur could effectively increase the carrier lifetime and mobility by passivating the trap states on the grain boundaries, which is also consistent with the enhanced radiative recombination efficiency.
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Affiliation(s)
- Fang Yao
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
| | - Ruiming Li
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
| | - Zhenglin Jia
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
| | - Songxue Bai
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
| | - Yujie Yang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
| | - Yanyan Li
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
| | - Yalun Xu
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
| | - Guojia Fang
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - Qianqian Lin
- Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China, School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
- Hubei Luojia Laboratory, Wuhan 430072, People's Republic of China
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Li Z, Hou C, Luo Y, Zhang W, Li L, Xu P, Xu T. Embedded racetrack microring resonator sensor based on GeSbSe glasses. OPTICS EXPRESS 2023; 31:1103-1111. [PMID: 36785152 DOI: 10.1364/oe.478613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/14/2022] [Indexed: 06/18/2023]
Abstract
In this article, a compact racetrack double microring resonator (MRR) sensor based on Ge28Sb12Se60 (GeSbSe) is investigated. The sensor device consists of a racetrack microring, an embedded small microring, and a strip waveguide. Electron beam lithography (EBL) and dry etching are used to fabricate the device. The compact racetrack double MRR device are obtained with Q-factor equal to 7.17 × 104 and FSR of 24 nm by measuring the transmission spectrum. By measuring different concentrations of glucose solutions, a sensitivity of 297 nm/RIU by linear fitting and an intrinsic limit of detection (iLOD) of 7.40 × 10-5 are obtained. It paves the way for the application of chalcogenide glasses in the field of biosensing.
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