Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Publication date: 27th October 2017
Organometal halide perovskite solar cells has attracted much attention in the scientific community. Methylammonium lead halide (CH3NH3PbX3,X = I or Br or Cl) perovskites have a large light absorption coefficient, long carrier diffusion length and long range charge carrier lifetime. In general, perovskite solar cells consisted of perovskite layer as a light-absorbing layer sandwiched between the electron transport layer (ETL) (eg. TiO2 or ZnO) and hole transport layer (HTL) (eg. Spiro-MeOTAD or PTAA). Novel metals such as Au or Ag were used as a metal counter electrode. Such materials are costly besides having extreme limitation of enduring stability, thereby impeding the future perovskite solar cells’ commercialization. To obtain solutions over these issues, various research teams have offered results acquired from hole-conductor free perovskites through having the both novel and HTL materials replaced with affordable carbon materials.
We fabricated hole-conductor free perovskite solar cells using carbon materials as counter electrode. In this structure, interface engineering between the perovskite and carbon counter electrode plays a critical role in determining an overall performance of device. Keeping this aspect in mind, we focused on improving the morphology of perovskite film by changing the solubility factor of lead salt in commonly used organic solvents along with a small amount of water additive. The function of water additive is to increase solubility of lead precursor and control the grain growth of perovskite film. We have investigated effects of water additive on perovskite crystallization, morphology of perovskite film and device performance. We have achieved a power conversion efficiency of 8.165% which is among the highest for hole-conductor free perovskite solar cells.
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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
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.