Optical properties of Cd1−xZnxTe thin films fabricated through sputtering of compound semiconductors

Banerjee, Pushan; Ganguly, Rajiv; Ghosh, B.

doi:10.1016/j.apsusc.2009.07.112

Cited by 26 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A study on the impact of thickness on physical properties is of great significance for fabrication of tandem solar cells. An enormous amount of research work on structure, optical and optoelectronic properties of CdZnTe thin films have been reported by the researchers across the world [17][18][19][20][21][22]. However, there is lack of reports on the effect of film thickness on structural, optical, electrical and surface morphological properties of CdZnTe films.…”

Section: Introductionmentioning

confidence: 99%

Effect of thickness on physical properties of electron beam vacuum evaporated CdZnTe thin films for tandem solar cells

Chander

Dhaka

2016

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Effect of thickness on physical properties of electron beam vacuum evaporated CdZnTe thin films for tandem solar cells

Chander

Dhaka

2016

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

“…This improvement in efficiency of CdTe:Cu/CdS cell compared to that of CdTe/CdS cell was due to the decrease in series resistance of cell upon the doping of Cu into CdTe matrix. 8 Till now, various techniques such as close spaced sublimation, 9 chemical bath deposition, 10 thermal evaporation, 11 electrodeposition, 12 pulsed laser deposition, 13 and rf sputtering 14 have been adopted for the deposition of CdTe thin films. Out of which, the electron beam evaporation technique, one of the physical vapor deposition methods, has been considered largely for the growth of device quality CdTe thin films because of its maximum possibility for the direct transfer of energy to the source.…”

Section: Introductionmentioning

confidence: 99%

Physical properties of electron beam evaporated CdTe and CdTe:Cu thin films

Punitha

Sivakumar

Sanjeeviraja

et al. 2014

Journal of Applied Physics

View full text Add to dashboard Cite

In this paper, we report on physical properties of pure and Cu doped cadmium telluride (CdTe) films deposited onto corning 7059 microscopic glass substrates by electron beam evaporation technique. X-ray diffraction study showed that all the deposited films belong to amorphous nature. The average transmittance of the films is varied between 77% and 90%. The optical energy band gap of pure CdTe film is 1.57 eV and it decreased to 1.47 eV upon 4 wt. % of Cu addition, which may be due to the extension of localized states in the band structure. The refractive index of the films was calculated using Swanepoel method. It was observed that the dispersion data obeyed the single oscillator of the Wemple-Didomenico model, from which the dispersion energy (Ed) parameters, dielectric constants, plasma frequency, and oscillator energy (Eo) of CdTe and CdTe:Cu films were calculated and discussed in detail with the light of possible mechanisms underlying the phenomena. The variation in intensity of photoluminescence band edge emission peak observed at 820 nm with Cu dopant is due to the change in surface state density. The observed trigonal lattice of Te peaks in the micro-Raman spectra confirms the p-type conductive nature of films, which was further corroborated by the Hall effect measurement. The lowest resistivity of 6.61 × 104 Ω cm was obtained for the CdTe:Cu (3 wt. %) film.

show abstract

“…Several physical and chemical techniques have been used to synthesize CdZnTe thin films such as sputtering [5], molecular beam epitaxy [6,9,10], vacuum evaporation [11][12][13], co-evaporation [14], metal-organic chemical vapor deposition [15,16], multilayer method [17], hot-wall evaporation technique [18], electrodeposition [3,19], pulse plating technique [20] and radio frequency magnetron sputtering [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Air-stable Cd0.23Zn0.77Te nanostructure thin films

Zawawi

Mahdy

2014

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Air-stable CdZnTe nanostructure thin films were synthesized by inert gas condensation technique under constant preparation conditions of Argon gas flow, deposition rate and substrate temperature 300 K. The CdZnTe nanostructure thin films were deposited on freshly cleaned glass substrates. The film thickness has been raised from 20 to 70 nm. The films exhibited nanocrystalline single phase cubic structure as indicated by grazing incident in-plane X-ray diffraction patterns and ensured by HRTEM diffraction patterns. The average particle size of examined films was increased from 5.6 to 10.6 nm by raising thin film thickness as determined from HRTEM images. The average particle size of examined film was measured by HRTEM after 230 day aging and shows a relative stability in the particle size. The optical transmission, reflection and absorption spectra were influenced by the increasing of the particle size P s . The optical band gap E g decreased from 3.24 to 3.05 eV as average particle size enlarged from 5.6 to 10.6 nm. Higher values of absorption coefficient spectra and refractive indices have been observed for films of higher particle size. Relative stability of optical properties has been detected for aged film. The d.c. electrical conductivity behavior at different temperatures was tuned by changing the particle size of examined nanocrystalline films. The activation energy values are in the range 0.67-0.77 eV regardless the change in particle size.

show abstract

Optical properties of Cd1−xZnxTe thin films fabricated through sputtering of compound semiconductors

Cited by 26 publications

References 16 publications

Effect of thickness on physical properties of electron beam vacuum evaporated CdZnTe thin films for tandem solar cells

Effect of thickness on physical properties of electron beam vacuum evaporated CdZnTe thin films for tandem solar cells

Physical properties of electron beam evaporated CdTe and CdTe:Cu thin films

Air-stable Cd0.23Zn0.77Te nanostructure thin films

Contact Info

Product

Resources

About