Take a look at the great cover images from the August issues and top five most downloaded articles this month.
Polymer Solar Cells
Molecular orientation plays a critical role in determining the performance of all-polymer solar cells. In article number 1600504, Bumjoon J. Kim and co-workers report an approach for tuning the molecular crystallinity and orientation of naphthalenediimide-bithiophene-based n-type polymers (P(NDI2HD-T2)) by controlling their number average molecular weights. The cover image depicts the bulk heterojunction all-polymer solar cell with PTB7-Th donor and P(NDI2HD-T2) acceptor. The packing orientation of two polymers in thin film and at the interface is critical for producing high-performance solar cells.
Applications of smart watches are limited due to present design of energy storage devices. In article number 1600763, Xingbin Yan and co-workers describe for the first time the fabrication of a novel flexible solid-state supercapacitor to integrate energy storage device with a watchband. The as-assembled smart watchband exhibits excellent electrochemical stability during statical and dynamical bending. As a smart energy-support watchband, it maintains shape memory property which can be automatically induced by touching it with the human wrist.
Top 5 most downloaded papers in August:
by Xiaosi Zhou, Le Yu, Xin-Yao Yu, Xiong Wen (David) Lou
by Ji-Youn Seo, Taisuke Matsui, Jingshan Luo, Juan-Pablo Correa-Baena, Fabrizio Giordano, Michael Saliba, Kurt Schenk, Amita Ummadisingu, Konrad Domanski, Mahboubeh Hadadian, Anders Hagfeldt, Shaik M. Zakeeruddin, Ullrich Steiner, Michael Grätzel, Antonio Abate
by Xiaoyan Zhang, Lili Hou, Artur Ciesielski, Paolo Samorì
by Johan E. ten Elshof, Huiyu Yuan, Pablo Gonzalez Rodriguez
by Shiva Gupta, Liang Qiao, Shuai Zhao, Hui Xu, Ye Lin, Surya V. Devaguptapu, Xianliang Wang, Mark T. Swihart, Gang Wu