Enhancing current density using vertically oriented organic photovoltaics

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• 作者：Soniya D. Yambem ; ^{sdyambem@mail.uh.edu} ; Kang-Shyang Liao ; Seamus A. Curran ; ^{sacurran@mail.uh.edu}
• 关键词：Organic photovoltaics ; Transparent electrodes ; Vertical photovoltaics
• 刊名：Solar Energy Materials and Solar Cells
• 出版年：2012
• 出版时间：June, 2012
• 年：2012
• 卷：101
• 期：Complete
• 页码：227-231
• 全文大小：794 K

文摘

We report a new organic photovoltaics (OPV) design, ¡°a wrapped OPV? which can circumvent both challenges of short exciton diffusion length , and low charge carrier mobility of organic semiconductors by orienting the OPV vertically, to capture; manage; guide and use all incident photons and therefore, generate higher current. Resonant light, on being transmitted into a wrapped OPV, makes multiple passes through the photoactive layer and is absorbed completely, thus achieving benefits of thick photoactive layer while maintaining its ultra-thin thickness requirement. The current density generated from a wrapped OPV is twice than that generated by a similar OPV with flat orientation.