Efficient ITO-nSi solar cells with a textured silicon surface

Electrical performance analysis of PV modules with bifacial silicon solar cells and white diffuse reflector

“…Efficiencies of 23% were obtained and researchers reported that the output power of the modules with bifacial cells can be enhanced by more than 10% over the single side module (Mishima et al, 2011). Another approach to fabricate bifacial cells was presented by Bruk et al (2009) and Simashkevich et al (2011). Solar cells were manufactured with two isotype junctions in a n-type wafer and front junction was obtained by depositing an indium tin oxide (ITO) layer.…”

Solar Cells on the Base of Semiconductor-Insulator-Semiconductor Structures

“…ITO/SiO 2 /n/n + Si bifacial solar cells with textured surface of Si crystals Using the method of n + ITO/SiO 2 /n/n + Si bifacial solar cells fabrication described in with improved parameters in conformity with p.2 of this communication, in (Simashkevich et al, 2011) two types of bifacial solar cells have been obtained which have different profiles of silicon wafer surface (Fig. 26 and Fig.…”

“…The texturization leads to the enlargement of the junction area of a photovoltaic cell and to the increase of the conversion efficiency. The enlargement of the junction area in the case of silicon crystals is usually achieved by means of selective chemical etching in KOH (Bobeico et al, 2001;Dikusar et al, 2008;Simashkevich et al, 2011). As a result, pyramids or truncated cones with the base dimensions of 5 mx5 m or with a diameter of 10 m on the Si surface are formed.…”

“…Mat-textured Si surfaces were produced by the immersion of the Si wafers in NaOH solution at 85 0 C. For so treated specimens the solar energy conversion efficiency of 13% was attained under AM1 illumination. The paper (Simashkevich et al, 2011) studied the properties of ITO/nSi SC with improved parameters. The performed optimization consists in the following: the optimization of the thickness of the frontal ITO layer and of the thickness of the insulator SiO 2 layer; the optimization of the concentration of the electrons in absorbing Si wafers; the texturing of the Si wafers surface.…”