Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applications
We report the effect of substrate temperature (25–300 °C) on the structural, optical and electrical properties of Cadmium Sulphide (CdS) thin films deposited onto glass substrate by Radio Frequency (RF) magnetron sputtering. The structural, morphological, optical and electrical properties of the fil...
Main Authors: | , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2020-06-01
|
Series: | Results in Physics |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379720300401 |
id |
doaj-dfdf65fc603344298e5cbe17f426f578 |
---|---|
record_format |
Article |
spelling |
doaj-dfdf65fc603344298e5cbe17f426f5782020-11-25T03:52:40ZengElsevierResults in Physics2211-37972020-06-0117103132Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applicationsN.K. Das0J. Chakrabartty1S.F.U. Farhad2A.K. Sen Gupta3E.M.K. Ikball Ahamed4K.S. Rahman5A. Wafi6A.A. Alkahtani7M.A. Matin8N. Amin9Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, BangladeshDepartment of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh; Institut National de la Recherché Scientifique (INRS), 1650, Boulevard Lionel Boulet, Varennes, Quebec J3X 1S2, Canada; Corresponding authors at: Department of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh.Industrial Physics Division, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka 1205, BangladeshDepartment of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, BangladeshDepartment of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, BangladeshSolar Energy Research Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia; Institute of Sustainable Energy, Universiti Tenaga Nasional (@The Energy University), Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, MalaysiaInstitute of Sustainable Energy, Universiti Tenaga Nasional (@The Energy University), Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, MalaysiaInstitute of Sustainable Energy, Universiti Tenaga Nasional (@The Energy University), Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, MalaysiaDepartment of Electrical and Electronic Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, BangladeshInstitute of Sustainable Energy, Universiti Tenaga Nasional (@The Energy University), Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, MalaysiaWe report the effect of substrate temperature (25–300 °C) on the structural, optical and electrical properties of Cadmium Sulphide (CdS) thin films deposited onto glass substrate by Radio Frequency (RF) magnetron sputtering. The structural, morphological, optical and electrical properties of the films were characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), UV–VIS-NIR spectroscopy and Hall Effect measurement respectively. The XRD studies showed that the films were polycrystalline with hexagonal wurtzite structure preferentially oriented along the (0 0 2) plane parallel to the substrate surface. The XRD data analysis further revealed the crystallite size of the nanocrystalline films i.e. 22–24 nm exhibiting the fact that crystallite size increased with increasing the substrate temperature. The FE-SEM images along with energy dispersive spectroscopy (EDS) studies confirmed the homogeneous, compact and pin-hole free surface morphology. The UV–VIS-NIR studies unveiled the optical transmittance in the range of 75–90% after 540 nm of the wavelength of light. The optical band gaps were found to be decreasing from 2.34 eV to 2.26 eV with increasing the substrate temperature. The films were characterized as n-type as evidenced by the Hall Effect measurement. The carrier mobility was found to be increasing gradually from 5.53 to 12.57 cm2/V·s by increasing the substrate temperature from room temperature to 300 °C due to the improvement of crystalline quality and grain size of the films. The results showed good optical and electrical properties of the films deposited at 300 °C which are suitable to use as window layer in thin film based solar cells.http://www.sciencedirect.com/science/article/pii/S2211379720300401Thin filmsCdSRF sputteringSubstrate temperatureXRDUV–VIS-NIR |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N.K. Das J. Chakrabartty S.F.U. Farhad A.K. Sen Gupta E.M.K. Ikball Ahamed K.S. Rahman A. Wafi A.A. Alkahtani M.A. Matin N. Amin |
spellingShingle |
N.K. Das J. Chakrabartty S.F.U. Farhad A.K. Sen Gupta E.M.K. Ikball Ahamed K.S. Rahman A. Wafi A.A. Alkahtani M.A. Matin N. Amin Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applications Results in Physics Thin films CdS RF sputtering Substrate temperature XRD UV–VIS-NIR |
author_facet |
N.K. Das J. Chakrabartty S.F.U. Farhad A.K. Sen Gupta E.M.K. Ikball Ahamed K.S. Rahman A. Wafi A.A. Alkahtani M.A. Matin N. Amin |
author_sort |
N.K. Das |
title |
Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applications |
title_short |
Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applications |
title_full |
Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applications |
title_fullStr |
Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applications |
title_full_unstemmed |
Effect of substrate temperature on the properties of RF sputtered CdS thin films for solar cell applications |
title_sort |
effect of substrate temperature on the properties of rf sputtered cds thin films for solar cell applications |
publisher |
Elsevier |
series |
Results in Physics |
issn |
2211-3797 |
publishDate |
2020-06-01 |
description |
We report the effect of substrate temperature (25–300 °C) on the structural, optical and electrical properties of Cadmium Sulphide (CdS) thin films deposited onto glass substrate by Radio Frequency (RF) magnetron sputtering. The structural, morphological, optical and electrical properties of the films were characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), UV–VIS-NIR spectroscopy and Hall Effect measurement respectively. The XRD studies showed that the films were polycrystalline with hexagonal wurtzite structure preferentially oriented along the (0 0 2) plane parallel to the substrate surface. The XRD data analysis further revealed the crystallite size of the nanocrystalline films i.e. 22–24 nm exhibiting the fact that crystallite size increased with increasing the substrate temperature. The FE-SEM images along with energy dispersive spectroscopy (EDS) studies confirmed the homogeneous, compact and pin-hole free surface morphology. The UV–VIS-NIR studies unveiled the optical transmittance in the range of 75–90% after 540 nm of the wavelength of light. The optical band gaps were found to be decreasing from 2.34 eV to 2.26 eV with increasing the substrate temperature. The films were characterized as n-type as evidenced by the Hall Effect measurement. The carrier mobility was found to be increasing gradually from 5.53 to 12.57 cm2/V·s by increasing the substrate temperature from room temperature to 300 °C due to the improvement of crystalline quality and grain size of the films. The results showed good optical and electrical properties of the films deposited at 300 °C which are suitable to use as window layer in thin film based solar cells. |
topic |
Thin films CdS RF sputtering Substrate temperature XRD UV–VIS-NIR |
url |
http://www.sciencedirect.com/science/article/pii/S2211379720300401 |
work_keys_str_mv |
AT nkdas effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT jchakrabartty effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT sfufarhad effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT aksengupta effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT emkikballahamed effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT ksrahman effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT awafi effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT aaalkahtani effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT mamatin effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications AT namin effectofsubstratetemperatureonthepropertiesofrfsputteredcdsthinfilmsforsolarcellapplications |
_version_ |
1724481601679654912 |