Quantum well solar cells

Trends, Challenges and Opportunities in Advanced Solar Cells Technologies and PV Market

“…(vi) It was obtained the internal quantum efficiency for the absorption process between the confining levels [10]. (vii) The results generated by the model simulator are in agreement with the experimental ones [11,12]. (i) The role of these specific nanostructures in the increasing of the solar cells efficiency is discussed [14,15].…”

A Review of Ultrahigh Efficiency III-V Semiconductor Compound Solar Cells: Multijunction Tandem, Lower Dimensional, Photonic Up/Down Conversion and Plasmonic Nanometallic Structures

“…The carriers or excitons generated in the QWs/QDs can thermally escape onto the conduction band for electrons or valence band for holes to contribute to the total photocurrent enhancement ideally maintaining the photovoltage of the original material, as schematically depicted in Figure 15. Photocurrent enhancement for a GaAs solar cell with InGaAs/GaAs multi-quantum wells (MQWs) relative to a GaAs cell without MQW in the IR region was observed [92]. The efficiency limit for such solar cells with intermediate bands was estimated as 63% under 46000 suns [93], inevitably equal to the value in [86].…”

Photovoltaic Concentrators - Fundamentals, Applications, Market & Prospective

“…New products based on III-V semiconductors are doing their first steps into the CPV market, moving from labs to pilot production lines. The approach of the strain balanced quantum well solar cells (SB-QWSC) (Barnham et al, 2002), appears of great technical interest for the efficiency improvement of multi-junctions solar cells as well as for the possibility to tail the cells on particular optical designs acting on the spectral properties of the light, like as dichroic concentrators (Martinelli et al, 2005). In order to reduces the cost of these cells high research efforts have been invested, following different routes.…”