Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Organometallic halide perovskite is currently one of the most promising and distinctive candidates as absorber materials for thin-film photovoltaic (PV) applications. These materials have gained a considerable attention for PV devices in recent years due to their advantages of high performance, low-cost raw materials and potentially high throughput solution-processed deposition technique. The outstanding performance of organolead halide perovskite-based solar cells is due to that perovskite materials possess intrinsically marvellous characteristics including direct band gap, small exciton binding energy, high carrier mobility, and large absorption coefficient. In this work, a two-step coating method was used to fabricate high-efficient and reproducible perovskite-based solar cells. Usually, HI acid is used to promote the dissolution of PbI2 in the organic solvent for deposition of the PbI2 film by the so-called two-step method. However, the addition of HI acid in the solution has very short life-time for the solution, which reduces the performance of the PV devices. In this work, we investigate an additive for the PbI2 solution, which promoted the dissolution of PbI2 in DMF solvent and also significantly increased the life time of the solution, enabling to obtain reproducible high performance PV devices. PEDOT:PSS has been used in the PV devices as the hole transport layer, however, the poor moisture stability of PEDOT:PSS can greatly reduce the stability of the perovskite-based PV devices. Therefore, the sol-gel/PEDOT:PSS composite thin film was introduced in our devices, which improved stability of our devices. The morphologies of the perovskite films were investigated by SEM. The power conversion efficiency (PCE) of 15.01% was achieved based on the device architecture of ITO/PEDOT:PSS/CH3NH3PbI3/PCBM/BCP/Au.
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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.
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