Template assisted growth of microporous structures of CdSe _xTe_1 − x and thin film photocurrent studies

Ternary alloyed II–VI group semiconducting CdSe _xTe_1 − x thin films (x = 0.1 to 1) have been fabricated using electrodeposition technique for detailed photoelectrochemical study and to eventually grow their two-dimensional microporous photonic structures using self-assembled template for optoelectronic devices. Band gap tuning is achieved by controlling Se:Te ratio and the ratio of Se:Te has been controlled using appropriate precursors ratios and their respective concentrations, electrolyte pH etc. Extensive structural and photonic studies have been explored for alloyed CdSe _xTe_1 − x thin films (x = 0.1 to 1) to establish correlation between structural and optical properties for the series of x. The photoelectrochemical studies have shown a stable photocurrent response and confirmed the n-type semiconducting behaviour of CdSe _xTe_1 − x thin films with photocurrent densities up to 0.6 mA cm⁻². (paper)