Growth and characterization of graphite doped CdTe/CdS thin film heterojunction
1Department of Physics, The Islamia University of Bahawalpur, 63100, Pakistan
2Department of Applied Materials & Engineering, UCLA, USA
Adv. Mater. Lett., 2017, 8 (8), pp 878-882
Publication Date (Web): May 23, 2017
Copyright © IAAM-VBRI Press
Doping is a notable factor to improve the performance of CdTe/CdS heterojunction solar cell. Graphite doped CdTe/CdS heterojunction on Si (1 1 1) substrate has systematically fabricated by thermal evaporator method under medium vacuum (10-4 torr) condition. Characterization of doped CdTe/CdS film was carried out by various diagnostic techniques such as X-ray diffraction (XRD) exhibits the polycrystalline structure of cubic phase CdTe and hexagonal phase CdS, scanning electron microscopy (SEM) shows the smoothening of the film, energy dispersive X-ray (EDX) confirm the elemental composition found in the film and current-voltage (I-V) analysis suggests the diode like properties where the current is slightly increased by the doping of graphite into CdTe/CdS heterojunction compared to the reported literature. Analysis of I-V characteristics has been made to investigate the current conduction mechanism in CdTe/CdS heterojunction.
CdTe, CdS, graphite, heterojunction