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Recent Progress in Nanoscale Morphology Control for High Performance Polymer Solar Cells

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The nanoscale morphology of the electronic donor and acceptor materials in photoactive layers significantly influences both the exciton split and charge carrier delocalization and extraction processes in prevalent bulk-heterojunction (BHJ) based polymer solar cells (PSCs). An optimized morphology, including interpenetrating networks of donor and acceptor materials, nanoscale phase separation, and a vertical percolation path with a high concentration of electron donors at the anode and acceptors at the cathode, is a prerequisite for achieving highly efficient PSCs. Moreover, the stability of the material morphology is also gaining increasing attention because it is an important factor that can also affect the durability of the photovoltaic devices. This review summarizes the recent progress in nanoscale morphology control of BHJ PSCs towards further enhancement in device performance and life time.
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Keywords: BULK HETEROJUNCTION; CHARGE CARRIERS TRANSPORT; EXCITON DISSOCIATION; NANOSCALE MORPHOLOGY CONTROL; POLYMER SOLAR CELLS

Document Type: Review Article

Publication date: 01 October 2015

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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