Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Publication date: 27th October 2017
It has been reported that the efficiency of perovskite solar cells was improved by larger gain size of the perovskite under the presence of chloride anion. However, the role of Cl anions present in TiO2/PVK interface is not clear. Several studies have been reported that, for CH3NH3PbI3 (MAPbI3)-perovskite solar cells, charge recombination in the TiO2/PVK interface was suppressed by passivating the interface. In earlier studies we have also reported the efficiency enhancement due to the suppressed charge recombination at the PbI2-passivated interface of TiO2/PVK(1). This was explained by passivating charge trapping sites existing in the TiO2/PVK interface. These results prompted us to passivate the interface with PbCl2 or MAI+PbCl2 mixture. Passivation on TiO2/PVK interface was carried out by dipping porus-TiO2 substrates into MAPbClxI3-x dilute solution. XPS measurement suggested that Cl-doped PVK can cover on TiO2 surface with Ti-O-Cl moieties. It was found that crystal size grown on TiO2 with Ti-O-Cl was larger than that on naked TiO2. Solar cells composed of “FTO/compact-TiO2/porous-TiO2 with Ti-O-Cl /CH3NH3PbI3/ Spiro-OMeTAD/Au had higher Jsc and Voc than those composed of “FTO/compact-TiO2/naked porous-TiO2 /CH3NH3PbI3/ Spiro-OMeTAD/Au, demonstrated that Ti-O-Cl help passivate surface traps of Tio2 as well as grow large crystal.
Reference
1. S.Nakayashiki et al., “Interface structure between titania and perovskite materials observed by quqrtz crystal microbalance system,” Journal of Photonics for Energy. 5, 057410, 1-7 (2015)
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.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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.