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1. (WO2018142321) NANOSTRUCTURED SUBCELLS WITH HIGH TRANSPARENCY IN MULTI-JUNCTION PV APPLICATIONS

Pub. No.:    WO/2018/142321    International Application No.:    PCT/IB2018/050634
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Fri Feb 02 00:59:59 CET 2018
IPC: H01L 31/0352
H01L 31/0687
H01L 31/0725
H01L 31/054
Applicants: SOL VOLTAICS AB
Inventors: ANTTU, Nicklas
OHLSSON, Jonas
ABERG, Ingvar
Title: NANOSTRUCTURED SUBCELLS WITH HIGH TRANSPARENCY IN MULTI-JUNCTION PV APPLICATIONS
Abstract:
A method of making a stacked tandem photovoltaic device including determining nanostructure and index of refraction parameters of subcells of the stacked tandem photovoltaic device to reduce in-plane waveguiding of light incident on the stacked tandem photovoltaic device, providing a first photovoltaic subcell, the first photovoltaic subcell comprising nanostructures based on the step of determining and providing a second photovoltaic subcell based on the step of determining. The first photovoltaic subcell has a first bandgap, the second photovoltaic subcell has a second bandgap and the first bandgap is larger than the second bandgap. Light incident on the stacked tandem photovoltaic device passes through the first photovoltaic subcell before entering the second photovoltaic subcell.