Growth and Photoelectric Properties of Twinned ZnSe$_{\bm {1-x}}$Te$_{\bm x}$ Nanotips

The authors report the growth of high density ZnSe
_0.9
Te
_0.1
nanotips by molecular beam epitaxy and the fabrication of ZnSeTe nanotip photodetector. It was found that the as-grown ZnSe
_0.9
Te
_0.1
nanotips were twinned with alternative multidomains and mixture of cubic zinc-blende/hexagonal wurtzite phases. With 5-V applied bias, it was found that photocurrent to dark current contrast ratio of the fabricated photodetector was larger than 700.