Comparison of Performance of Integrated Photodetectors Based on ZnS and ZnSe Metal–Semiconductor–Metal Photodiodes

Abstract

The successful fabrication of monolithically integrated photodetectors composed of a heterojunction bipolar transistor (HBT) and a metalsemiconductor-metal (MSM) photodiode was achieved by a patterned oxide growth technique. The photoresponsivities of the ZnS and the ZnSe MSM photodiodes were 0.028 and 0.08 A/W, respectively. Comparison of the performance in terms of optical and electrical characteristics between the ZnS-and the ZnSe-based integrated photodetectors were carried out; at a bias of 5 V, the current amplification ratios were 18.2 and 20.8, respectively. The maximal measurable input optical power intensities were 273 mW for ZnS-based integrated photodetector and 94 mW for ZnSe-based integrated photodetector. This successful integration indicates the potential of the patterned oxide growth technique in the development of integrated devices based on II-VI ZnS and ZnSe compounds for short-wavelength applications.

Progress in ultraviolet photodetectors based on II–VI group compound semiconductors

“…8b). 117 In this work, the ZnS and ZnSe MSM photodiodes showed responsivities of 0.028 and 0.08 A W À1 , respectively. Moreover, the ZnS (R 320 nm /R 485 nm ) and ZnSe (R 440 nm /R 600 nm ) devices exhibited high rejection ratios of 2.6 Â 10 3 and 1.6 Â 10 3 , respectively.…”

Synthesis of ZnO nanoparticles using a hydrothermal method and a study its optical activity

“…Metal oxide nanomaterial synthesis has attracted considerable attention over the last few years . Versatile routes have been developed to prepare ZnO nanoparticles, which have far‐reaching applications due to their wide band gap . Most techniques, however, need a high temperature and have to be performed under a costly inert atmosphere, via a hydrothermally reported route.…”

Influence of surfactant structures in luminescence enhancement dynamics during nucleation and growth of aqueous ZnS nanoparticles and their photoactivation due to illumination with UV/visible light

“…Zinc sulfide (ZnS) is a versatile technologically important semiconductor material and fundamental milestone for many photonic and optoelectronic applications of quantum-confined species, e.g. photodetectors, light emitting diodes, lasers and biological levels [1][2][3]. With recent advances in colloidal chemistry, efforts have been made to synthesize high quality semiconductor nanoparticles (NPs) in the liquid phase either by aqueous or non-aqueous route.…”