Preparation of ZnTe thin films using chemical bath deposition technique

Abstract

Chemical bath deposition was used to prepare thin films of ZnTe. The density of compounds (0.5-2) ml in 50 ml of distilled water, the precipitation time (10-80 min), and the solution temperature during the precipitation process (15-85 C) have been changed during the preparation of the ZnTe thin films to get the optimal deposition conditions of a semiconductor. The effect of these parameters has been determined by studying the optical properties of the films which included the transmittance and absorbance as a function of the wavelength and energy gap. The energy gap remains constant at about 2.7 eV over all precipitation times for each density of compound. We have also found that the energy gap of the films decreases with increasing solution temperature, reaching approximately 2.9-3eV at 15 C and decreasing to 2.4 eV at 85 C.

An overview on the role of ZnTe as an efficient interface in CdTe thin film solar cells: a review

“…Thin film solar cells are comprised of several thin film layers and a variety of strategies is available thus far to develop them, [82][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97] providing diverse properties. An overview of the physical and chemical routes is presented in Fig.…”

“…Thin film solar cells can be developed with better efficiency and stability by optimizing the thickness and properties of their different constituent layers, i.e., window, absorber, buffer and contact layers. As stated, a variety of deposition techniques has been employed thus far to grow the constituent layers, which are classified as follows: (a) physical and (b) chemical routes, where the resistive heating thermal evaporation, electron beam evaporation, molecular beam epitaxy, sputtering, and electrodeposition techniques have been used thus far for the fabrication of ZnTe thin films, [82][83][84][85][86][87][88][89][90][91][92][93][94][95][96][97] providing diverse properties. An overview of the physical and chemical routes is presented in Fig.…”

“…146 Considering the required technology, these films have also been developed thus far by employing laser evaporation, ion beam sputtering, laser chemical vapor deposition, plasma enhancement, chemical bath deposition, spray pyrolysis, liquid phase screen printing, pulsed laser deposition, spin coating and sol-gel techniques. [147][148][149][150][151][152][153][154][155][156] The obtained film parameters are presented in Table 5 for electrodeposition together with the other chemical and physical route-based techniques such as SILAR, PLD and CSS.…”

Fabrication and investigation of zinc telluride thin films

“…it can be used as a p-type [8,5]. ZnTe has been deposited by several methods such as rf magnetron sputtering [5,11] glancing angle technique [12] thermal evaporation [7,13,14] electrodeposition [8,15] pulsed laser [16] (MBE)molecular beam epitaxy [17,18] , hot-wall evaporations [19], electron beam evaporation [20,21], chemical spray pyrolysis [22], Multiple Potential Steps [23] high vacuum resistive system [24] chemical bath deposition [25].…”

Atomic‐Ordering‐Induced Modulated Properties of Zigzag ZnTe Nanotubes

“…[23] Such a possibility of wide range of applications led to several experiments for the synthesis of various ZnTe nanostructures such as quantumdots, nanoplates, thin films, nanowires, nanoribbons, and nanotubes. [24][25][26][27][28][29][30][31][32] For example, Zarei et al [33] synthesized ZnTe thin films by glancing angle technique and observed that they were useful in optoelectronic devices. In a study, Das et al [34] synthesized various ZnTe nanoparticles and reported their size-dependent structural, optical, and vibrational properties.…”