The Cover picture shows deoxyribose nucleic acid (DNA) that has suitable optical and energy levels to be used as hole-transporting material (HTM) in perovskite solar cells. The power conversion efficiency and stability of a perovskite solar cell utilizing DNA as the HTM was increased significantly compared to the frequently used hole-transporting material, PEDOT:PSS. Our findings of DNA as HTM in perovskite solar cells demonstrate that their charge-transport properties, ease in processing, and natural origin create new opportunities for optoelectronic devices. More details can be found in the Full Paper by Rashid bin Mohd Yusoff et al. on page 1736 in Issue 13, 2016 (DOI: 10.1002/cssc.201600288).
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