Proceedings of International Conference on Perovskite Thin Film Photovoltaics, Photonics and Optoelectronics (ABXPV18PEROPTO)
DOI: https://doi.org/10.29363/nanoge.abxpvperopto.2018.085
Publication date: 11th December 2017
In the energy field, the use of hybrid organic-inorganic perovskite materials such as CH3NH3PbI3 (MAPI) has opened up new directions to fabricate cost effective and high efficient photovoltaic (PV) devices. Power conversion efficiency (PCE) of solution processed perovskite solar cells (PSCs) reached a record value of 22.7% that pushes the scientific community to focus further on the scaling up of this PV technology. However, the manufacture of large area perovskite solar cells and modules need proper coating procedures and a direct use of techniques used for small area deposition are not always possible. Moreover, interconnection between cells forming the module requires additional processes often based on advanced laser techniques. In this communication, I will present our latest achievement on perovskite modules fabrication. We will show that the optimization of carrier transporting layers, perovskite absorbing layers, laser patterning, interlayer engineering and deposition technique should be pursued at the same time to improve module efficiency of aperture area and stability of the device. In particular, a new paradigm to tailor interface properties based on Graphene and Related Materials (GRM) was recently proposed and applied to PSC and modules with the aim to increase both PCE and stability. [1-6] We indeed demonstrated a PCE of 12.6% on a monolithic module with an active area exceeding 50 cm2. Larger area modules were also fabricated by using automated blade coating with gas quenching strategy for perovskite crystallization. Particular efforts were devoted to increase the aperture ration. By using a proper combination of IR and UV laser radiation, we demonstrated that it is possible to reduce interconnection dead area of a module below 400 mm making an aperture ratio of 95%. [7]
References
[1] A. Agresti et al., Advanced Functional Materials 2016, 26, 2686; ChemSusChem 2016, 9, 2609
[2] A. Capasso et al. Adv. Energy Mat. 2016, 6, 1600920
[3] T. Gatti et al. Adv. Funct. Mat. 2016, 26, 7443
[4] A. L. Palma et al. Nano Energy 2016, 22, 349
[5] A. Agresti et al. ACS Energy Lett. 2017, 2, 279
[6] F. Biccari et al. Adv. Energy Mat. 2017, 7, 1701349
[7] A. Palma et al. IEEE J. Photovoltaics 2017, 7, 1674
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