Open AccessPhysical Properties of Screen-Printed Polycrystalline Cadmium Sulphide Films for Solar Cells
Author(s) -
B. Y. Bagul
Publication year - 2021
Publication title -
journal of mountain research/journal of mountain research
Language(s) - English
Resource type - Journals
eISSN - 2582-5011
pISSN - 0974-3030
DOI - 10.51220/jmr.v16i2.25
Subject(s) - crystallite , materials science , absorbance , band gap , electrical resistivity and conductivity , transmittance , thin film , cadmium sulfide , cadmium , coprecipitation , chemical engineering , analytical chemistry (journal) , nanotechnology , optoelectronics , optics , metallurgy , chemistry , physics , electrical engineering , chromatography , engineering
In the present work Cadmium sulphide (CdS) nanopowder was synthesized by chemical coprecipitation route and films were synthesized by non-vacuum based and cost feasible screen-coating route. Most favorable conditions for synthesis of good quality screen-coating films were obtained. Deposited CdS films were investigated by XRD, FESEM, EDAX, UV-vis and two probes methods for microstructural, morphological, elemental, optical and electrical properties. The XRD studies reveals that the films have polycrystalline nature showing hexagonal structure with preferred orientation of grains along (002) plane for powder & (101) plane for CdS film. The morphological analysis showed the films are homogeneous with nearly spherical clusters. Elemental analysis confirmed the existence of Cd and S elements in the films with Cd/S ratio is 0.74. The optical properties of the films were investigated through absorbance & transmittance measurement. The optical direct band gap value was found to be 2.34 eV. The electrical studies revealed the semiconducting nature of CdS films with electrical resistivity in the order of 105 Ωcm and activation energy 0.4 eV.