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Proton Radiation Hardness of Perovskite Tandem Photovoltaics.


ABSTRACT: Monolithic [Cs0.05(MA0. 17FA0. 83)0.95]Pb(I0.83Br0.17)3/Cu(In,Ga)Se2 (perovskite/CIGS) tandem solar cells promise high performance and can be processed on flexible substrates, enabling cost-efficient and ultra-lightweight space photovoltaics with power-to-weight and power-to-cost ratios surpassing those of state-of-the-art III-V semiconductor-based multijunctions. However, to become a viable space technology, the full tandem stack must withstand the harsh radiation environments in space. Here, we design tailored operando and ex situ measurements to show that perovskite/CIGS cells retain over 85% of their initial efficiency even after 68 MeV proton irradiation at a dose of 2 × 1012 p+/cm2. We use photoluminescence microscopy to show that the local quasi-Fermi-level splitting of the perovskite top cell is unaffected. We identify that the efficiency losses arise primarily from increased recombination in the CIGS bottom cell and the nickel-oxide-based recombination contact. These results are corroborated by measurements of monolithic perovskite/silicon-heterojunction cells, which severely degrade to 1% of their initial efficiency due to radiation-induced recombination centers in silicon.

SUBMITTER: Lang F 

PROVIDER: S-EPMC7238692 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Monolithic [Cs<sub>0.05</sub>(MA<sub>0.</sub> <sub>17</sub>FA<sub>0.</sub> <sub>83</sub>)<sub>0.95</sub>]Pb(I<sub>0.83</sub>Br<sub>0.17</sub>)<sub>3</sub>/Cu(In,Ga)Se<sub>2</sub> (perovskite/CIGS) tandem solar cells promise high performance and can be processed on flexible substrates, enabling cost-efficient and ultra-lightweight space photovoltaics with power-to-weight and power-to-cost ratios surpassing those of state-of-the-art III-V semiconductor-based multijunctions. However, to become a vi  ...[more]

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