Nanocrystalline dye-sensitized solar cell/copper indium gallium selenide thin-film tandem showing greater than 15% conversion efficiency

P Liska, K R Thampi, M Grätzel, D Brémaud, D Rudmann, Hari M Upadhyaya, Ayodhya N Tiwari

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Multijunction stacked (tandem) solar cells can increase the overall photovoltaic conversion efficiency by optimal utilization of the solar spectrum in individual cells. We demonstrate that a photovoltaic tandem cell comprising a nanocrystalline dye-sensitized solar cell as a top cell for high-energy photons and a copper indium gallium selenide thin-film bottom cell for lower-energy photons produces AM 1.5 solar to electric conversion efficiencies greater than 15%.

Original languageEnglish
Article number203103
Number of pages3
JournalApplied Physics Letters
Issue number20
Publication statusPublished - 15 May 2006

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