Proceedings of 6th International Conference on Hybrid and Organic Photovoltaics (HOPV14)
Publication date: 1st March 2014
Methylammonium lead perovskite hybrid solar cells, which have been the research forefront, have realized highly efficient and stable photovoltaic devices. For solution-processable perovskite-based solar cells, a two-step sequential deposition method allows facile and complete transition from PbI2 to CH3NH3PbI3 perovskite. In this sense, in the initial step, the PbI2 loading has thus become a critical factor in determining the device performance. In this work, we changed the PbI2 precursor concentration and corresponding devices were assembled. It was found that for the first-step deposition of PbI2, larger concentration led to stronger light-absorption. However, a concentration of over 1 M would presumably give rise to particle conglomeration and formation of grain boundaries, causing the photovoltaic performance to degrade. With help of myriad characterizations using XRD, SEM, UV-Vis spectra, and IPCE, we identified an optimal condition to fabricate such hybrid solar cells with a power conversion efficiency of 7.4% under AM1.5G illumination in the air. Investigation regarding steady-state photoluminescent quenching and carrier diffusion lifetime measurements from a time-resolved fluorescence spectrometer was also conducted with results discussed.
UV-Vis absorption spectra of CH3NH3PbI3 perovskite with different PbI2 precursor concentration. Inset: photo images of fabricated PbI2 (up) and CH3NH3PbI3 perovskite (bottom) with different concentrations (from left to right: 0.4 M, 0.6M, 0.8M, and 1.0 M)
1. M. M. Lee, J. Teuscher, T. Miyasaka, T. N. Murakami and H. J. Snaith, Science, 2012, 338, 643-647. 2. M. Liu, M. B. Johnston and H. J. Snaith, Nature, 2013, 501, 395-398. 3. A. Kojima, K. Teshima, Y. Shirai and T. Miyasaka, J. Am. Chem. Soc., 2009, 131, 6050-6051. 4. J. Burschka, N. Pellet, S.-J. Moon, R. Humphry-Baker, P. Gao, M. K. Nazeeruddin and M. Gr鋞zel, Nature, 2013, 499, 316-319.
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