Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
The creation of bulk heterojunction architecture enabled a substantial increase on device performance of organic solar cells, and this device structure has become the most widely used at present(Yu, Gao et al. 1995). Although, this intimate mixing structure large increase the exiton dissociation, the recombination separated polarons also substantially increased due to large interface area. This recombination also known as the non-geminate recombination becomes the main loss process in bulk heterojunction organic photovoltaics device (Koster, Mihailetchi et al. 2005, Koster, Mihailetchi et al. 2006). In order to achieve higher device performance, the study of physical mechanism of non-geminate recombination is of crucial significance. To study the non-geminate recombination dynamics, our research employs a combination of charge extraction (CE) and transient photovoltage/photocurrent (TPV/TPC) to experimental quantify the carrier density and lifetime respectively. My current work studied:
1. TPV/TPC/CE study on thickness and light intensity dependence of polymer/fullerene solar cells.
2. Voc loss mechanism of degraded organic photovoltaics device.
3. Effects of electrode charge on organic solar cells.
Koster, L. J. A., et al. (2006). "Bimolecular recombination in polymer/fullerene bulk heterojunction solar cells." Applied Physics Letters 88(5): 052104.
Koster, L. J. A., et al. (2005). "Light intensity dependence of open-circuit voltage of polymer:fullerene solar cells." Applied Physics Letters 86(12): 123509.
Yu, G., et al. (1995). "Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor Heterojunctions." Science 270(5243): 1789-1791.
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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.
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