Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Publication date: 27th October 2017
Recently, organic–inorganic hybrid perovskites have attracted considerable attention as possible next-generation thin-film solar cells because of their advantages such as low-cost of precursors, long exciton diffusion length etc. Although the most efficient perovskite solar cells (PSCs) have usually employed hole transporting materials (HTMs), which play a key role in hole transportation and retardation of charge recombination, improvement in the PSC photovoltaic performance mainly relies on optimizing various device fabricating methods, elaborate engineering of perovskite morphology, and composition. To further improve the efficiency and stability of PSC, efforts have been made to research on appropriate HTMs, especially dopant-free HTMs. Herein we demonstrate the improvement in efficiency and stability of PSCs utilizing non-peripherally substituted octapentyl phthalocyanine (C5PcH2) as dopant-free HTM layers with thermal annealing. By using dopant-free C5PcH2 in combination with CH3NH3PbI3, a final device efficiency of 12.2% was achieved by annealing at 130 ºC for 10 min. Furthermore, to verify the stability enhancement of the dopant-free C5PcH2 HTM, we investigated three employed HTMs, including the free-dopant C5PcH2, poly(3-hexylthiophene) with Li-bis(trifluoromethanesulfonyl) imide, and poly-triarylamine with Li-bis(trifluoromethanesulfonyl) imide, and subject CH3NH3PbI3 perovskite thin films coated with these HTMs to dark air with high humidity of 90%. The results indicated that decomposing of CH3NH3PbI3 perovskite to PbI2 through the hydration processes was decelerated by coating the free-dopant C5PcH2 HTM layer [1, 2].
[1] Quang-Duy Dao, Ryotaro Tsuji, Akihiko Fujii, and Masanori Ozaki, Org. Electron. 43 (2017) 229-234.
[2] Quang-Duy Dao, Akihiko Fujii, Ryotaro Tsuji, Yuko Takeoka, and Masanori Ozaki, Org. Electron. 43 (2017) 156-161.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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.