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Issue 36, 2017
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Monolithic tandem solar cells comprising electrodeposited CuInSe2 and perovskite solar cells with a nanoparticulate ZnO buffer layer

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Abstract

We demonstrate semi-transparent inverted planar perovskite solar cells (PSCs) for monolithic tandem construction with an electrodeposited CuInSe2 (CISe) solar cell. To eliminate the severe degradation of perovskite/PCBM layers during a transparent conducting oxide sputtering process, a thin ZnO nanoparticle (NP) layer is introduced onto the electron-extracting PCBM layer by a simple solution process without a post-annealing step. It is found that a thin ZnO-NP layer with an optimal thickness facilitates the electron transfer from PCBM to the Ag back contact in opaque devices while also helping to protect the underlying layers from plasma-induced damage in semi-transparent devices. As a result, semi-transparent PSC devices with an inverted architecture having a sputtered Al-doped ZnO top electrode are realized with power conversion efficiencies over 10%. In addition, monolithically integrated, two-terminal tandem devices composed of solution-processed CISe/perovskite are successfully fabricated, demonstrating an efficiency of 11% with a negligible degree of hysteresis.

Graphical abstract: Monolithic tandem solar cells comprising electrodeposited CuInSe2 and perovskite solar cells with a nanoparticulate ZnO buffer layer

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Publication details

The article was received on 14 Jul 2017, accepted on 25 Aug 2017 and first published on 25 Aug 2017


Article type: Paper
DOI: 10.1039/C7TA06163C
Citation: J. Mater. Chem. A, 2017,5, 19439-19446
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    Monolithic tandem solar cells comprising electrodeposited CuInSe2 and perovskite solar cells with a nanoparticulate ZnO buffer layer

    Y. H. Jang, J. M. Lee, J. W. Seo, I. Kim and D. Lee, J. Mater. Chem. A, 2017, 5, 19439
    DOI: 10.1039/C7TA06163C

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