Study of GeSn Mid-infrared Photodetectors for High Frequency Applications oleh Huong Tran, Callum G. Littlejohns, David J. Thomson, Thach Pham, Amir Ghetmiri, Aboozar Mosleh, Joe Margetis, John Tolle, Goran Z. Mashanovich, Wei Du, Baohua Li, Mansour Mortazavi, Shui-Qing Yu