Charge Extraction in Flexible Perovskite Solar Cell Architectures for Indoor Applications - with up to 31% Efficiency

• Type: Article in International Scientific Journal
• Date: 2022-10-05

Authors

Cristina Teixeira (Author) Other; Pierpaolo Spinelli (Author) Other; Luigi Castriotta (Author) Other; David Muller (Author) Other; Senol Oz (Author) Other; Andrade, L. (Author) FEUP; Adélio Mendes (Author) FEUP; Aldo Carlo (Author) Other; Uli Wurfel (Author) Other; Konrad W. (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: ADVANCED FUNCTIONAL MATERIALS

Vol. 32

ISSN: 1616-301X

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Authenticus ID: P-00W-YRA

DOI: 10.1002/adfm.202206761

Abstract (EN): Perovskite Solar Cells (PSCs) are well known for their high efficiencies under 1 sun (AM1.5G), however, PSC can also generate power by harvesting the low-light available indoors. Here, three flexible PSC architectures are presented for indoor applications: with a metal electrode aiming for high efficiency; carbon electrode aiming for high stability and compatibility with large-scale production; and hole transport material (HTM)-free carbon for simplifying the fabrication process. A maximum efficiency of 30.9% (30.0%) under 1000 lux (200 lux) is obtained for a PSC with gold electrode. A maximum efficiency of 25.4% (24.7%) and 23.1% (22.3%) is obtained for the carbon devices with and without HTM, respectively, under 1000 lux (200 lux). To the best of the author's knowledge, the efficiency values presented here for a device with a carbon-based electrode, with and without HTM, are the record values for a flexible PSC at indoor light conditions. Furthermore, the HTM-free carbon device kept 84% of its initial efficiency after 1000 h at MPPT and lost virtually no performance after 1000 h at 85 degrees C. Also, non-encapsulated devices of all configurations withstood 1600 h in air with a maximum loss in efficiency of 6%.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12