"Jeehwan Kim,Homare Hiroi,Teodor K. Todorov,Oki Gunanwan,Masaru Kuwahara,Tayfun Gokmen,Dhruv Nair,Marinus Hopstaken,Byungha Shin,Hiroki Sugimoto,David B. Mitzi","High Efficiency Cu2ZnSn(S,Se)4 Solar Cells by Applying a Double In2S3/CdS Emitter",,"ADVANCED MATERIALS",,"Volume 26",,"Page 7427-7431",2014,Nov. "Homare Hiroi,Jeehwan Kim,Oki Gunawan,Tayfun Gokmen,Masaru Kuwahara,Teodor K. Todorov,Dhruv Nair,Marinus Hopstaken,Yu Zhu,David B. Mitzi,Hiroki Sugimoto","Enhancement of Carrier Collection in Cu2ZnSn(SeS)4 Solar Cell With Hybrid Buffer Layer","29th European Photovoltaic Solar Energy Conference and Exhibition, Sep. 2014.",,"WIP",,,,2014,Sept. "Homare Hiroi,Jeehwan Kim,Teodor K. Todorov,Masaru Kuwahara,Yu Luo,Tayfun Gokmen,Xiaoyan (Ingrid) Shao,Richard Haight,Wei Wang,Mark T. Winkler,David B. Mitzi,Hiroki Sugimoto","Open Circuit Voltage Improvement on Solution-based Cu2ZnSn(SeS)4 Solar Cells by Hybrid Buffer Layer","23rd International Photovoltaic Science and Engineering Conference (PVSC-23), Nov. 2013.",,,,,,2013,Nov. "A. Tsukazaki,A. Ohtomo,M. Kawasaki,S. Akasaka,H. Yuji,K. Tamura,K. Nakahara,T. Tanabe,A. Kamisawa,T. Gokmen,J. Shabani,M. Shayegan","Spin susceptibility and effective mass of two-dimensional electrons in MgxZn1-xO/ZnO heterostructures",,"Physical Review B",,"Vol. 78","No. 23"," 233308-1-4",2008,Dec.