Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
DOI: https://doi.org/10.29363/nanoge.ap-hopv.2018.026
Publication date: 27th October 2017
Solar cell research has been attracting a lot of attention from researchers worldwide mostly because of the rapidly increasing efficiencies of the perovskite solar cells. From 3.8% in 2009 to 22.1% in 2016, a whopping increase by nearly 6 times, in less than ten years is a remarkable achievement and indeed a breakthrough in this field. The methyl ammonium lead iodide (MAI) perovskites have been considered as the most promising candidates by far. The excellent properties of the MAI perovskite such as their high mobility, broadband light absorption, low exciton binding energy as well as low trap density makes them suitable to be used as an absorber layer in solar cell [1,2]. The typical device architecture consists of perovskite absorber layer sandwiched between a hole transport layer and an electron transport layer, along with additional metal electrode. Perovskite is one of the most important layers of the device, but there are various other factors which contribute in the overall device performance. The substrate plays an influential role in the bulk properties of the perovskite films as well as interfacial properties of the device. Therefore the selection of the substrate on which the perovskite grows is an important step. Studying this layer carefully to understand the role of the interfaces in various mechanisms, including the degradation can help us to address the existing issues related with the perovskite solar cells. In an attempt to understand the role of this layer for the perovskite film, on the overall device performance, we have fabricated devices with different hole transport layers. The difference in the morphology and the crystallinity of the perovskite films coated over different substrates will give us an insight to further understand the differences in other parameters which are significant for the overall device performance. Studies by Md. Bodiul Islam et al [3] and Kunie Ishioka et.al [4] show the influence of substrates on the device stability and hole injection dynamics at the HTL/perovskite interface respectively. Their studies comparing PEDOT:PSS, NiO and PTAA as the hole transport layer motivate us to further investigate the influence of different substrates on the properties of perovskite solar cells.
References:
1. Kojima, et al. J.Am. Chem. Soc., 131, 6050-6051 (2009)
2. Bobo Li, et al. RSC Adv., 6, 38079 (2016)
3. Md. Bodiul Islam, et al. ACS Omega, 2, 2291-2299, (2017)
4. Kunie Ishioka, et al. J. Phys. Chem. Lett., 8, 3902−3907 (2017)
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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.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
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