25-Percent efficient low-resistivity silicon concentrator solar cells

A review of concentrator silicon solar cells

“…The bifacial contact cells and back contact cells made by CMOS-like process have high efficiency (larger than 25%) under high concentration (100-200 suns) [19,44], but their costs are high even the process is simplified. The bifacial contact cells made by common industrial crystalline silicon solar cell manufacturing process using CZ wafers have low costs, their highest efficiency is larger 20% under low concentration and larger than 19% under middle concentration (C o50 suns) [57,58].…”

Realization of Concentrated Photovoltaic Module Based on Horizontally Staggered Light Guide

“…In addition to the cost benefit, because the conversion efficiency in Si solar cells generally increases under concentrated light, we gain a significant improvement in the energy conversion. For example, if a solar cell with 22% efficiency under one sun is used as a receiver, its efficiency reaches 25% at 45x concentration level [5]. Moreover, silicon solar cells have already been shown to work with 27.6% efficiency under concentrated light [2].…”

Developments in Crystalline Silicon Solar Cells

“…This can be minimised by making these lines as fine as possible with, ideally, as large an aspect ratio (height to width ratio) as possible. Alternatively, optical approaches can be used to steer incoming light away from these lines or to ensure that light reflected from them eventually finds its way to the cell surface (Green et al, 1986;Cuevas et al, 1990).…”