Te-doped cadmium telluride films fabricated by close spaced sublimation

Abstract

Te-doped cadmium telluride (CdTe) films were deposited on ITO/glass substrates using the close spaced sublimation (CSS) method. The films were characterized by x-ray diffraction (XRD), the x-ray fixed-quantity (XRF) method, scanning electron microscopy (SEM) and the Hall effect. The XRD and SEM results show that appropriate Te doping would be favourable to the growth of CdTe crystallite. The Hall effect measurements indicate that the conductivity of CdTe films could be dramatically improved by Te doping. The work presented here suggests that p-type doping CdTe films can be produced using this deposition method.

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

“…Thus, the incorporation of extra Te leads to the expansion of the CdTe lattice. A similar observation has been reported by Li et al [14]. The change in intensities was also observed.…”

“…In general, as-prepared CdTe films, fabricated by various techniques, show a high electrical resistivity (10 7 -10 9 O cm) at room temperature [14]. The change in sheet resistance and resistivity of the samples as function of Te content at temperature 200 1C is shown in Table 1.…”

“…Wu et al [10] have reported on a CdTe/CdS solar cell with an efficiency of 16.5%. Because of its low sublimation temperature, CdTe polycrystalline films can be prepared by several techniques, such as thermal evaporation [11], metal organic chemical vapour deposition (MOCVD) [12], radio frequency (RF) sputtering [13], closed space sublimation (CSS) [14], screen printing [15], hotwall flash evaporation [16], molecular beam deposition [17,18], hot-wall vacuum evaporation [19][20][21], etc. The CSS technique is one of the various techniques that have produced encouraging results.…”

Investigation of swift heavy ion irradiation effect on Au/CdZnTe/In detector

“…The beam was scanned over 10mmx IOmm area on the sample using a magnetic beam scanner. The dose of charge accumulated in the sample was measured separately in terms of fluences and the following fluences were used: lxlO ll , lxl0 12 , lxl0 13 A Rich Seifert X-ray diffractometer with monochromatic wavelength of 1.5405 (Cu Ka) was used to record the diffraction pattern. A CZT sample with a size of 7x7x3 mm 3 was used in our work.…”

Growth of AgGaTe2 Layers by a Closed-Space Sublimation Method

“…[1][2][3][4][5][6][7] Also, chalcopyrite I-III-VI 2 compounds have recently attracted attention as potential components for semiconductor devices, including applications in solar cells and electrooptic devices. [8][9][10] In particular, CuInSe 2 has already become widely used in making commercial solar cells.…”