Growth of bulk BiOBr single crystals for the characterization of intrinsic semi-conductive properties and application in ultraviolet photodetectors

Abstract

High-quality bulk BiOBr crystal with mm size is obtained by a space-confined chemical vapor transport strategy, & its intrinsic semi-conductive properties are characterized. It is fabricated into two-terminal UV photodetectors, which exhibit good UV detection performance.

Highly sensitive UV photodetector based on solution-processed bismuth oxyiodide epitaxial thin films

“…BiOX has been used for photodetection from ultraviolet to near-infrared light according to the bandgap value. 6–14 However, the optoelectrical performance of BiOX based photodetectors is still far worse than that of other well investigated oxide or sulfide compounds, which could be attributed to the immaturity of the deposition techniques. 6–14…”

“…BiOX has been used for photodetection from ultraviolet to near-infrared light according to the bandgap value. [6][7][8][9][10][11][12][13][14] However, the optoelectrical performance of BiOX based photodetectors is still far worse than that of other well investigated oxide or sulfide compounds, which could be attributed to the immaturity of the deposition techniques. [6][7][8][9][10][11][12][13][14] Various strategies have been demonstrated for the synthesis and investigation of BiOX, especially using polycrystalline nanopowders and thin films.…”

“…[6][7][8][9][10][11][12][13][14] However, the optoelectrical performance of BiOX based photodetectors is still far worse than that of other well investigated oxide or sulfide compounds, which could be attributed to the immaturity of the deposition techniques. [6][7][8][9][10][11][12][13][14] Various strategies have been demonstrated for the synthesis and investigation of BiOX, especially using polycrystalline nanopowders and thin films. BiOX thin films prepared by solution-based techniques such as aerosol assisted chemical vapor deposition (CVD) and spray deposition exhibited nanoflower or nanoplate-like surface morphology, similar to that of nanopowders.…”