Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
A uniform and full coverage perovskite film is of significant importance to flexible perovskite solar cells. When there are some pinholes in the perovskite film or even many bared substrate surface without perovskite covering, current shunting in the carrier transportation would inevitablly occur, which degrades the device performance. In this talk, we reported the preparation of flexible perovskite solar cells on plastic substrate with gas pump drying method. We could obtain dense, uniform and full coverage perovskite film using gas pump drying method. The perovskite CH3NH3PbI3 films were prepared on flexible ZnO coated ITO-PEN substrate by this novel gas pump drying process, and AFM results show that the film presented an extremely smooth surface morphology with a root mean square roughness of 15.8 nm in a large and representative scan area of 18×18 µm2. Furthermore, the flexible planar perovskite solar cell was fabricated, and all devices were prepared at 100 °C or below in air condition. The highest efficiency on flexible substrates had reached 11.34% with an average efficiency of 8.93% for 14 solar cell devices. We bent the flexible planar perovskite solar cell to a small radius of just 4.5 mm, which is one of the highest bending extent (the smallest radius). Extremely small degradation of the efficiency of the flexible perovskite solar cell was found within 30 bending cycles. This suggested a quite good flexibility of the flexible perovskite solar cell. After the further 10 bending cycles, the devices exhibited 67% of initial efficiency. The decrease of efficiency during severe bending may be attributed to degradation of the device layers. The results indicate that one-step gas pump drying process is an excellent method to prepare flexible solar cells. It is worth to note that this gas pump drying method can be operated just in air.
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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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