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建立於 2014-02-26, 週三 14:01
最近更新於 2014-02-26, 週三 14:08
發佈於：2014-02-26, 週三 14:05
點擊數：6083

演講人：古培正 副教授

演講題目：Strain Engineering in Nitride Semiconductors

演講人：古培正 副教授

演講題目：Strain Engineering in Nitride Semiconductors

演講時間：103.3.3 10:20~12:10

演講地點：工綜館203室

演講摘要：

Strain alters both electronic and optical properties of semiconductors. Properly controlled, strain can greatly improve device performance. For example, biaxial strain in semiconductor heterostructures lowers the effective mass of their valence band and enables faster transistors and lower-threshold lasers. Poorly controlled, strain increases defect density and leads to unwanted properties. For example in III-nitride semiconductors, strain induces an anisotropic piezoelectric field, which is responsible for efficiency droop in LEDs, difficulties in achieving green emitters, and abnormally large linewidths from quantum dot emission. Understandably, major research and development efforts have been invested in containing the strain in nitride semiconductors. However, if properly engineered, strain can also enable new frontiers in III-nitride photonics. Specifically, we will describe our progress in realizing a chip-scale polarization-controlled single photon source for quantum cryptography and an ultracompact RGB (full-color) light engine for lighting, display, and imaging applications.
個人學經歷：
學歷
畢業學校
國別
主修學門系所
學位
臺灣大學
台灣
電機工程
學士
University of California Berkeley
USA
Electrical Engineering and Computer Science
PhD
經歷：
服務機關
服務部門
職稱
現職:University of Michigan Ann Arbor
Electrical Engineering and Computer Science
Associate Professor
國立交通大學
光電系
客座副教授
經歷:
    
University of Michigan Ann Arbor
Electrical Engineering and Computer Science
Assistant Professor
Intel
  
Senior Engineer
UC Berkeley
Electrical Engineering and Computer Science
Postdoc