Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Publication date: 27th October 2017
Past few years, lead halide perovskite solar cells (PSCs) have emerged in the field of solar cells. The power conversion efficiency (PCE) of PSCs has been boosted from an initial 3.8% to an astounding 22.1%.[2]but the toxicity issue of lead still remains. For the further commercialization, it is required to search replacements.
Tin-based perovskites have comparable electronic properties to lead-based perovskites and are promising lower toxicity alternatives for solar cell applications.
Recently, there are some reports of tin-based PSCs. Yan and co-workers adopted an inverted structure for FASnI3-based PSCs, and showed the PCE of 6.22%.[2] Zhao et al. employed a fully tin-based, mixed-organic-cation perovskite absorber (FA)x(MA)1−xSnI3 (FA = NH2CH = NH2+, MA = CH3NH3+) and generated a maximum PCE of 8.12%. [3] However, all the tin-based perovskites have poor air stability.
Here, we employed planar cells with lead-free tin-based perovskite. As a result, we succeeded in fabricating solar cells with 6.9% in ambient air.
[1] NREL, Best Research-Cell Efficiencies, https://www.nrel.gov/pv/ assets/images/efficiency-chart.png. (accessed: April 2017)
[2] W. Liao, D. Zhao, Y. Yu, C. R. Grice, C. Wang, A. J. Cimaroli, P. Schulz, W. Meng, K. Zhu, R. G. Xiong, Y. Yan, Adv. Mater. 2016, 28, 9333.
[3] Z. Zhao, F. Gu, Y. Li, W. Sun, S. Ye, H. Rao, Z. Liu,* Z. Bian,* and C. Huang, Adv. Sci. 2017, 1700204
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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