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Extending the environmental lifetime of unpackaged perovskite solar cells through interfacial design

Chen, Haiwei (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Hou, Yi (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Halbig, C. E. (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
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Chen, Shi (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Zhang, Hong (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Li, Ning (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Guo, Fei (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Tang, Xiaofeng (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Gasparini, Nicola (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Levchuk, Ievgen (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Kahmann, Simon (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU),Rijksuniversiteit Groningen,University of Groningen
Ramirez Quiroz, Cesar Omar (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Osvet, Andres (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU)
Eigler, Siegfried, 1978 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Brabec, Christoph J. (author)
Friedrich-Alexander-Universität Erlangen Nurnberg (FAU),Das Bayerische Zentrum fur Angewandte Energieforschung e.V.
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 (creator_code:org_t)
2016
2016
English.
In: Journal of Materials Chemistry A. - : Royal Society of Chemistry (RSC). - 2050-7488 .- 2050-7496. ; 4:30, s. 11604-11610
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Solution-processed oxo-functionalized graphene (oxo-G1) is employed to substitute hydrophilic PEDOT:PSS as an anode interfacial layer for perovskite solar cells. The resulting devices exhibit a reasonably high power conversion efficiency (PCE) of 15.2% in the planar inverted architecture with oxo-G1 as a hole transporting material (HTM), and most importantly, deploy the full open-circuit voltage (Voc) of up to 1.1 V. Moreover, oxo-G1 effectively slows down the ingress of water vapor into the device stack resulting in significantly enhanced environmental stability of unpackaged cells under illumination with 80% of the initial PCE being reached after 500 h. Without encapsulation, ∼60% of the initial PCE is retained after ∼1000 h of light soaking under 0.5 sun and ambient conditions maintaining the temperature beneath 30 °C. Moreover, the unsealed perovskite device retains 92% of its initial PCE after about 1900 h under ambient conditions and in the dark. Our results underpin that controlling water diffusion into perovskite cells through advanced interface engineering is a crucial step towards prolonged environmental stability.

Subject headings

NATURVETENSKAP  -- Kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences (hsv//eng)

Publication and Content Type

art (subject category)
ref (subject category)

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