Université de Neuchâtel

Microcrystalline Silicon Solar Cells: Theory and Diagnostic Tools

Meillaud, Fanny ; Shah, Arvind ; Bailat, Julien ; Vallat-Sauvain, Evelyne ; Roschek, T. ; Rech, Bernd ; Dominé, Didier ; Söderström, Thomas ; Python, Martin ; Ballif, Christophe

In: Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, 2006, vol. 2, p. 1572-1575

A simple theoretical model for pin/nip-type muc-Si:H solar cells is presented. It is based on a superposition of a drift-dominated collection model and of the classical drift-diffusion transport model of the pn-diode. The model is the basis for a solar cell equivalent circuit, identical to the one introduced by Merten et al., for amorphous cells. The equivalent circuit serves as framework for the...

Université de Neuchâtel

Basic efficiency limits, recent experimental results and novel light-trapping schemes in a-Si:H, μc-Si:H and ‘micromorph tandem' solar cells

Shah, Arvind ; Vaněček, Milan ; Meier, Johannes ; Meillaud, Fanny ; Guillet, Joelle ; Fischer, Diego ; Droz, Corinne ; Niquille, Xavier ; Faÿ, Sylvie ; Vallat-Sauvain, Evelyne ; Terrazzoni-Daudrix, Vanessa ; Bailat, Julien

In: Journal of Non-Crystalline Solids, 2004, vol. 338-340, p. 639-645

Theoretical: Limits for Jsc, Voc, FF and efficiency of single-junction solar cells and tandems are derived, as a function of Eg, showing that: (1) double-junction ‘micromorph' solar cells constitute an optimum combination of bandgap values; (2) main future gain for thin-film silicon solar cells will be increasing...