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Quantum dot-doped porous silicon metal-semiconductor metal photodetector

Chia-Man Chou1, Hsing-Tzu Cho, Vincent K S Hsiao

  • 1Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, No, 1, University Rd, Puli, NanTou, 54561, Taiwan. kshsiao@ncnu.edu.tw.

Nanoscale Research Letters
|June 8, 2012
PubMed

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Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...