Low-cost CIGS solar cells by paste coating and selenization

KAELIN, M ; RUDMANN, D ; et al.

In: Proceedings of Symposium O on Thin Film Chalcogenide Photovoltaic Materials, EMRS 2004 Conference, Strasbourg, France, 24-28 May, 2004Thin solid films 480-81:486-490; Jg. 480-81 (2005) S. 486-490

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A simple process for the deposition of Cu(In,Ga)Se2 (CIGS) absorber layers is described. A low-cost CIGS precursor paste deposited by simple and fast doctor blade technique is subsequently selenized under selenium vapour in a quartz tube at 10 mbar (10 min at 550 °C). The precursor paste is prepared with metal chlorides and nitrates dissolved in alcohol. The solution is then mixed with a cellulose solution to adjust the viscosity for optimal deposition. The conversion of the precursor to the CIGS phase was confirmed by X-ray diffraction (XRD). Grain size and morphology were characterised with electron microscopy. A double-layer structure formed during selenization, with a CIGS layer on top of an amorphous carbon layer. Auger electron spectroscopy (AES) shows a decreasing Ga/In ratio from the carbon-CIGS interface towards the CIGS surface. The layer structure grown on Mo-coated glass substrates (conventional dc-sputtering) was processed to solar cells by depositing a CdS buffer layer (chemical bath deposition) and ZnO/ZnO:Al front contacts (conventional rf-sputtering). A maximum efficiency of 6.7% was achieved with approximately 0.5-μm-thick absorber layers. Quantum efficiency measurements reveal photon absorption losses for the longer wavelengths, which are attributed to the thin layers.

Titel:	Low-cost CIGS solar cells by paste coating and selenization
Autor/in / Beteiligte Person:	KAELIN, M ; RUDMANN, D ; KURDESAU, F ; ZOGG, H ; MEYER, T ; TIWARI, A. N
Link:	E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Quelle:	Proceedings of Symposium O on Thin Film Chalcogenide Photovoltaic Materials, EMRS 2004 Conference, Strasbourg, France, 24-28 May, 2004Thin solid films 480-81:486-490; Jg. 480-81 (2005) S. 486-490
Veröffentlichung:	Lausanne: Elsevier Science, 2005
Medientyp:	Konferenz
Umfang:	print, 12 ref
ISSN:	0040-6090 (print)
Schlagwort:	Crystallography Cristallographie cristallogenèse Electronics Electronique Metallurgy, welding Métallurgie, soudage Condensed state physics Physique de l'état condensé Sciences exactes et technologie Exact sciences and technology Sciences appliquees Applied sciences Energie Energy Energie naturelle Natural energy Energie solaire Solar energy Conversion photovoltaïque Photovoltaic conversion Cellules solaires. Cellules photoélectrochimiques Solar cells. Photoelectrochemical cells Photoelectric conversion: solar cells and arrays Composé minéral Inorganic compound Compuesto inorgánico Métal transition composé Transition element compounds Absorbeur Absorber Absorbente Caractéristique courant tension Voltage current curve Característica corriente tensión Cellule solaire Solar cell Célula solar Composé quaternaire Quaternary compound Compuesto cuaternario Couche tampon Buffer layer Capa tampón Croissance cristalline en solution Crystal growth from solutions Cuivre séléniure Copper selenides Diffraction RX X ray diffraction Difracción RX Etude expérimentale Experimental study Estudio experimental Gallium séléniure Gallium selenides Grosseur grain Grain size Grosor grano Indium séléniure Indium selenides Microscopie électronique balayage Scanning electron microscopy Microscopía electrónica barrido Morphologie Morphology Morfología Optimisation Optimization Optimización Précurseur Precursor Rendement quantique Quantum yield Rendimiento quántico Solution alcoolique Alcoholic solution Solución alcohólica Spectrométrie Auger Auger electron spectrometry Espectrometría Auger Analyse RX dispersion énergie Energy dispersive X-ray analysis Cu Ga In Se Cu(In,Ga)Se2 Substrat verre Auger electron spectroscopy Selenium vapour
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Conference Paper File Description: text Language: English Author Affiliations: Thin-Film Physics Group, Laboratory of Solid State Physics, Swiss Federal Institute of Technology, Zurich, Switzerland ; Solaronix SA, Rue de l'ouriette 129, 1170 Aubonne, Switzerland ; Centre for Renewable Energy Systems and Technology, Department of Electronic and Electrical Engineering, Loughborough University, United Kingdom Rights: Copyright 2005 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Energy

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