Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV19)
Publication date: 6th February 2020
In the energy field, the use of hybrid perovskite materials has opened up new directions to fabricate cost effective and highly efficient photovoltaic devices. Despite the impressive power conversion efficiency (PCE) already achieved (23.7% [1]), scalability and stability of device are topical challenges. Furthermore, large area deposition procedures and automatized fabrication protocols are required in order to obtain high throughput serial production of modules and panels. Tin oxide (SnO2) is a low-cost Electron Transport Layer (ETL) that it is commonly deposited by Spin-Coater [2][3]. In this work, we demonstrated spray coating as alternative, effective scalable technique to deposit ETL for perovskite solar cells (PSCs). In particular, we realized a first-ever sprayed low temperature SnO2 layer for PSCs. Additionally, by using nano particles of SnO2 (N-SnO2) we demonstrated the possibility of decreasing PSC fabrication temperature, that would be very attractive for flexible PSCs. The devices employing sprayed SnO2 layer achieve an efficiency that is comparable with respect to that obtained using spin-coated one. Furthermore, long-term stability of devices has not worsened for the sprayed SnO2. The CH3NH3PbI3 device based on sprayed N-SnO2 showed a maximum PCE of 16.77% (avg 15.2%). Unencapsulated cells based on sprayed SnO2 stored at 25°C and 50% relative humidity showed shelf life stability by retaining 85% of the initial PCE value after more than 1000 hours. Similar behaviour was observed for the PCE of the spin-coated SnO2 cells. Moreover, we demonstrated the feasibility of fabrication of the cells from uniform spray deposited SnO2 film on large-area 20×20 cm2: this provides a viable route to easily combine low-cost, stability and high efficiency for the next generation perovskite photovoltaic devices.
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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.