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PKP Metadata Items |
Metadata for this Document |
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| 1. |
Title |
Title of document |
High Efficiency CIGSS Thin Film based Solar Cells and Mini-modules |
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Creator |
Author's name, affiliation, country |
Ahmed Ennaoui; University Mohammed V, Physics Department, Faculty of Sciences, BP 1014 Rabat; Morocco |
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Description |
Abstract |
The highest efficiency for Cu(Ga,In)Se2 (CIGS) thin-film-based solar cells has been achieved with CdS buffer layers prepared by a solution growth method known as the chemical bath deposition (CBD). With the aim of developing Cd-free chalcopyrite-based-thin-film solar cells, we describe the basic concepts involved in the CBD technique. The recipes developed in our laboratory for the heterogeneous deposition for good-quality thin films of ZnO, ZnSe, ZnS are presented. In view of device optimization, the initial formation of chemical-bath-deposited ZnSe thin films on Cu(Ga,In)(S,Se)2 (CIGSS) and the subsequent development of the CIGSS/ZnSe heterojunction were investigated by X-ray photoelectron spectroscopy (XPS). The good surface coverage was controlled by measuring changes in the valence-band electronic structure as well as change in the In4d , Zn3d core lines. From these measurements, the growth rate was found to be around 3.6 nm/min. The valence band and the conduction band-offsets EV and EC between the layers were determined to be 0.60 and 1.27 eV, respectively for the CIGSS/ZnSe interface. The energy band diagram is discussed in connection with the band-offsets determined from XPS data. Small and large area CIGSS based solar cells with a CIGSS/Zn(Se,OH)/ZnO structure are produced. A ZnSe thickness below 10 nm has been found to be optimum for achieving a homogeneous and compact buffer layer on CIGSS with an active area efficiency of 15.7%. Using Siemens Solar technology this structure is adapted to fabricate Cd-free CIGSS monolithic mini-modules with efficiencies up to 11.7%. |
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Publisher |
Organizing agency, location |
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Contributor |
Sponsor(s) |
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Date |
(YYYY-MM-DD) |
09-03-2011
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Type |
Status & genre |
Peer-reviewed Article |
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Type |
Type |
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Format |
File format |
PDF |
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| 10. |
Identifier |
Uniform Resource Identifier |
https://revues.imist.ma/index.php/MJCM/article/view/55 |
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Source |
Title; vol., no. (year) |
Moroccan Journal of Condensed Matter; Vol 3 (2000) |
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Language |
English=en |
en |
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Relation |
Supp. Files |
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Coverage |
Geo-spatial location, chronological period, research sample (gender, age, etc.) |
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Rights |
Copyright and permissions |
Copyright (c)
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