Femtosecond laser-drilling-induced HgCdTe photodiodes.
Femtosecond-laser drilling may induce holes in HgCdTe with morphology similar to that induced by ion-milling in loophole technique. So-formed hole structures are proven to be pn junction diodes by the laser beam induced current characterization as well as the conductivity measurement. Transmission and photoluminescence spectral measurements on a n-type dominated hole-array structure give rise to different results from those of an ion-milled sample.
Zha
F-X
FX
Physics Department, Shanghai University, Shanghai 200444, China. fxzha@shu.edu.cn
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