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Title of Thesis

Preparation And Characterization Of Thin Film Polycrystalline Solar Cells

Author(s)

Rehana Zia

Institute/University/Department Details
Department of Physics / Lahore College for Women University, Lahore
Session
2009
Subject
Physics
Number of Pages
230
Keywords (Extracted from title, table of contents and abstract of thesis)
Solar, Cells, CdTe, Layer, Window, Structural, Annealing, Substrate, Efficiency, Characterization, Polycrystalline, Preparation

Abstract
This thesis describes the development and characterization of single crystal and polycrystalline CdTe/ZnxCd1-xS based solar cells along with the modeling of CdTe based solar cells. Solar cells hold great hopes for use as an environmental friendly and economically viable renewable energy source. For this purpose thin film materials are being investigated by various research organizations and groups. In this work we have developed ZnxCd1-xS thin film as window layer, CdTe as absorber and ZnTe thin film to solve the back contact problem of CdTe (due to high work function) and studied their optical, electrical and structural properties. The polycrystalline layers of ZnxCd1-xS, ZnTe and CdTe solar cell in both “Superstrate” and “Substrate” configurations were developed.I-V characterization for single crystal CdTe based solar cells at different illumination levels and temperatures were carried out, which showed 14.37% efficiency. We have applied 1-D modeling to these cells to improve the efficiency at lower illumination levels. All thin film ZnxCd1-xS/CdTe solar cell showed low efficiency (1.7%) which was improved up to 3.7% by annealing the cell at 200oC for three hours.

Download Full Thesis
4,117 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 CONTENTS

 

vii
83 KB
2

1

INTRODUCTION

1.1 Energy Sources
1.2 PV Devices
1.3 Materials used in PV Devices
1.4 CdTe based PV Devices
1.5 Layout of the Thesis
1.6 References

1
144 KB
3 2 THEORY OF PV DEVICES

2.1 Introduction
2.2 p-n Junction
2.3 Types of Junction
2.4 References

15
353 KB
4 3 EXPERIMENTAL TECHNIQUES

3.1 Introduction
3.2 Preparation Techniques
3.3 Characterization Techniques
3.4 References

50
482 KB
5 4 RESULTS AND DISCUSSION OF THIN FILMS

4.1 Introduction
4.2 ZnxCd1-xS Thin Films
4.3 CdTe Thin Films
4.4 ZnTe Thin Films
4.5 References

91
1,121 KB
6 5 RESULTS AND DISCUSSION OF PV DEVICES

5.1 Introduction
5.2 Single Crystal Devices
5.3 All Thin Film Devices
5.4 References

153
2,124 KB
7 6 GENERAL DISCUSSION AND CONCLUSIONS 209
67 KB