Properties of Te-rich cadmium telluride thin films fabricated by closed space sublimation technique

Shah, Nazar Abbas; Ali, Amjad; Ali, Zulfiqar; Maqsood, Asghari; Aqili, Akram K.S.

doi:10.1016/j.jcrysgro.2005.08.005

Cited by 42 publications

(14 citation statements)

References 29 publications

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“…The main reflection of all the samples is the same and can be indexed based on a cubic CdTe lattice. 19 The strong (111) reflection in the patterns indicates a preferential orientation of [111] in films as already reported for thermally evaporated CdTe thin films. 21 The low intensity of other peaks suggests a few other oriented grains.…”

Section: X-ray Diffraction Studiessupporting

confidence: 70%

“…19 Figure 5 shows the dark electrical resistivity as a function of Cd concentration for all the samples. It is clear from the figure that the resistivity of the samples having an excess of Te is around 10 8 Xcm, which drops to about 10 5 Xcm on Cd concentration approximately reaching 52 at.%.…”

Section: Electrical Analysismentioning

confidence: 99%

“…CdTe thin films can be prepared by several growth techniques. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] However, the best CdTe thin-film-based solar cells have been fabricated using CSS method; this is one of the various techniques with large area manufacturing potential due to its high throughput and efficient material utilization. 20 Thin films prepared by close spaced sublimation technique have distinct novel features, such as large grain sizes, well-defined preferential orientation, and relatively high absorption coefficients needed in the fabrication of solar cells material.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and characterization of Cd-enriched CdTe thin films by close spaced sublimation

et al. 2008

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Cd-enriched cadmium telluride (CdTe) polycrystalline films were grown on corning glass substrates by close spaced sublimation (CSS) technique. To our knowledge, Cd-enriched CdTe thin films by CSS have not been reported earlier. The structural investigations performed by means of X-ray diffraction (XRD) technique, scanning electron microscope (SEM), and energy dispersive X-ray spectroscopy (EDX) showed that the deposited films exhibit a polycrystalline structure with AE111ae as preferred orientation. The structural, optical, and electrical properties of these films were analyzed as a function of the Cd concentration. For the films having an excess of Cd, the electrical resistivity dropped several orders of magnitude. The deposited films also showed that the value of resistivity decreased with increasing temperature manifesting the semiconducting behavior of the films. The results showed that using this deposition technique, ntype Cd-enriched CdTe polycrystalline film could be produced.

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Section: X-ray Diffraction Studiessupporting

confidence: 70%

Section: Electrical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication and characterization of Cd-enriched CdTe thin films by close spaced sublimation

et al. 2008

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“…5 Wu et al 6 have reported on a CdTe/CdS solar cell with an efficiency of 16.5%. Because of its low sublimation temperature, cadmium telluride polycrystalline films can be prepared by several techniques, such as thermal evaporation, 7 electro deposition, 8 closed space sublimation (CSS), 9 hot-wall flash evaporation, 10 hot-wall vacuum evaporation. 11,12 The CSS technique is one of the various techniques that have produced encouraging results.…”

Section: Introductionmentioning

confidence: 99%

CdCl2-treated CdTe thin films deposited by the close spaced sublimation technique

et al. 2008

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Cadmium telluride thin films were prepared by the close spaced sublimation (CSS) technique, using CdTe powder as evaporant and were submitted to a chemical treatment at 25°C in a saturated CdCl 2 solution (2.08 g/100 mL methanol), followed by heat treatment under vacuum $10 -3 mbar at 400°C for 30 min. The effect of chemical and thermal treatments on the crystallographic, morphological, optical, and electrical properties were studied through XRD, scanning electron microscope (SEM), spectrophotometry, and dc electrical resistivity measurements, respectively. The studies revealed that the CdTe grows in face centered cubic phase and that post-deposition treatment affects the morphology as well as the crystallographic properties. The effect on the morphology is stronger. Increase of the grain size was observed in the samples treated thermally. The electrical resistivity drops by a factor of 20 in CdCl 2 -immersed and heated samples.

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“…CdTe in the shape of thin film can be polycrystalline or nanocrystalline, which can contribute towards the change of its characteristics [4]- [6]. Different methods are used for the preparation of thin films of CdTe, including electrodeposition [4], [7], [8], magnetron sputtering [9], [10], thermal evaporation [5], [11], close space sublimation [12] - [14] and others [15], [16].…”

Section: Introductionmentioning

confidence: 99%

STRUCTURAL AND OPTICAL PROPERTIES OF CdTe THIN FILMS OBTAINED BY ELECTRODEPOSITION

Tanushevski¹,

Sokolovski²

2017

RAD Conference Proceedings

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Properties of Te-rich cadmium telluride thin films fabricated by closed space sublimation technique

Cited by 42 publications

References 29 publications

Fabrication and characterization of Cd-enriched CdTe thin films by close spaced sublimation

Fabrication and characterization of Cd-enriched CdTe thin films by close spaced sublimation

CdCl2-treated CdTe thin films deposited by the close spaced sublimation technique

STRUCTURAL AND OPTICAL PROPERTIES OF CdTe THIN FILMS OBTAINED BY ELECTRODEPOSITION

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