Role of oxygen functional group in graphene oxide for reversible room-temperature NO2 sensing Original Research Article Carbon, Available online 1 May 2015, Pages You Rim Choi, Young-Gui Yoon, Kyoung Soon Choi, Jong Hun Kang, Young-Seok Shim, Yeon Hoo Kim, Hye Jung Chang, Jong-Heun Lee, Chong Rae Park, Soo Young Kim, Ho Won Jang | Few-layered graphene quantum Dots as efficient hole-extraction layer for High-performance polymer solar cells Original Research Article Nano Energy, Available online 30 April 2015, Pages Zicheng Ding, Zhen Hao, Bin Meng, Zhiyuan Xie, Jun Liu, Liming Dai
Graphical abstractFew-layered graphene quantum dots (F-GQD) with a small size of about 4nm and high content of periphery COOH groups show excellent film-forming capability and high work function of 5.26eV. When used as hole-extraction layer (HEL) in polymer solar cells (PSCs) based on high efficiency donor polymers, F-GQD outperforms graphene oxide and PEDOT:PSS.
 | Shot noise in magnetic field modulated graphene superlattice Original Research Article Physica E: Low-dimensional Systems and Nanostructures, Available online 30 April 2015, Pages Farhad Sattari
Graphical AbstractIn the parallel magnetization configuration when the number of the barriers is large enough unlike untiparallel magnetization configuration the Fano factor reaches a Poissonian value for any barrier height.

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