Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics (AP-HOPV17)
Publication date: 7th November 2016
Functionalized Porphyrins as New Hole-Transporting Materials for High Performance Perovskite-Based Solar CellsHsien-Hsin Chou,a Yu-Hsien Chiang,b Peter Chen,*,b and Chen-Yu Yeh*,aaDepartment of Chemistry, National Chung Hsing University, Taichung 402, Taiwanb Department of Photonics, National Cheng Kung University, Tainan 701, Taiwan AbstractPerovskite-based solar cells (PSCs) are the most fascinating solar-to-electricity converting technologies in the new century. The urge of searching for alternative hole-transporting materials (HTMs) for high-performance perovskite-based solar cells is growing. Recently we have developed new category of porphyrin-based hole-transporting materials which are structurally simple, easy to prepare and well performed. New zinc porphyrins Y2 and Y2A2 have been utilized in perovskite solar cells (PSCs) specifically as hole-transporting materials (HTMs) rather than photosensitizers. The combination of MAPbI3 as photosensitizer and porphyrins as HTMs is potential alternative to well-known MAPbI3/Spiro-OMeTAD hybrids owing to high performance and versatility toward molecular engineering of porphyrin families. A high efficiency of 16.60% is achieved by n-butyl tethered Y2 HTM (VOC = 0.99 V; JSC = 22.82 mA cm-2) which is comparable to that of Spiro-OMeTAD of 18.03% (VOC = 1.06 V; JSC = 22.79 mA cm-2). Both materials possess similar HOMO level and same order of magnitude of hole-mobility at 10-4 cm2 V-1 s-1. The slightly poorer performance of 10.55% (VOC = 1.01 V; JSC = 17.80 mA cm-2) is obtained for n-dodecyl tethered Y2A2 HTM. This is believed to stem from more surface pinholes while deposited on perovskite leading to an order of magnitude slower mobility. To our knowledge, it is the highest-performance solar cell device (including dye-sensitized solar cells and organic photovoltaics) ever reported that is incorporated with porphyrin materials.
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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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