Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
Publication date: 7th November 2016
Despite remarkable rise in efficiencies of hybrid organic-inorganic perovskite solar cells (PSCs), instability issues from intrinsic defects in perovskite layers have been main obstacle to the next generation power sources. Since this instability imposes to use expensive noble metal electrodes such as gold and platinum, which leads a dilemma between low-cost processability and long-term stability of the PSCs, low cost PSCs with long term stability would have major impact on the needs of our society. In this work, we clearly reveal that a critical self-degradation process of the PSCs arises from intrinsic ionic defects of the perovskite layer and successfully solve the problem with a new regime for long-term stable PSCs, which is versatile and universal method of using a “solution-processable chemical inhibition layer (CIL)” by neutralizing the ionic defects and inhibiting the corrosion of common metal electrodes. As a consequence, our long-term stable PSCs maintains almost ~ 80% of their initial PCEs even after the 9,000-storage hours under nitrogen condition, and ~ 80% after 200 hours even in ambient condition without any encapsulation. More importantly, we verified the universality of CIL whose amine function groups and metal oxide network medium act as “a corrosion inhibitor and a charge transport layer”, respectively. Our CIL, a solution-processable amine-mediated titanium suboxide (A-TiOx), successfully stabilizes iodide ions and protects the common metal electrodes of Al and Ag as an “active” passivation layer in the PSCs.
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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.