@article{CTT100711938,
  author = {Jeehwan Kim and Homare Hiroi and Teodor K. Todorov and Oki Gunanwan and Masaru Kuwahara and Tayfun Gokmen and Dhruv Nair and Marinus Hopstaken and Byungha Shin and Hiroki Sugimoto and David B. Mitzi},
  title = {High Efficiency Cu2ZnSn(S,Se)4 Solar Cells by Applying a Double In2S3/CdS Emitter},
  journal = {ADVANCED MATERIALS},
  year = 2014,
}

@inproceedings{CTT100702447,
  author = {Homare Hiroi and Jeehwan Kim and Oki Gunawan and Tayfun Gokmen and Masaru Kuwahara and Teodor K. Todorov and Dhruv Nair and Marinus Hopstaken and Yu Zhu and David B. Mitzi and Hiroki Sugimoto},
  title = {Enhancement of Carrier Collection in Cu2ZnSn(SeS)4 Solar Cell With Hybrid Buffer Layer},
  booktitle = {},
  year = 2014,
}

@inproceedings{CTT100702446,
  author = {Homare Hiroi and Jeehwan Kim and Masaru Kuwahara and Teodor K. Todorov and Dhruv Nair and Marinus Hopstaken and Yu Zhu and Oki Gunawan and David B. Mitzi and Hiroki Sugimoto},
  title = {Over 12% efficiency Cu2ZnSn(SeS)4 solar cell via hybrid buffer layer},
  booktitle = {},
  year = 2014,
}

@inproceedings{CTT100702464,
  author = {Richard Haight and D. Aaron R. Barkhouse and Wei Wang and Yu Luo and Xiaoyan Shao and David B. Mitzi and Homare Hiroi and Hiroki Sugimoto},
  title = {CdS and Cd-Free Buffer Layers on Solution Phase Grown Cu2ZnSn(SxSe1- x)4 :Band Alignments and Electronic Structure Determined with Femtosecond Ultraviolet Photoelectron Spectroscopy},
  booktitle = {MRS Proceedings},
  year = 2014,
}