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.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
The science and technology of advanced materials is a major resource of humanity to tackle global challenges. The Materials for Sustainable Development Conference is a forum for directing the knowledge and tools of science and technology of advanced materials to the areas and problems that contribute to the societal change.
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
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.