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Title: Highly Efficient and Stable Perovskite Solar Cells Enabled by Low‐Cost Industrial Organic Pigment Coating

Journal Article · · Angewandte Chemie
 [1];  [2];  [1];  [3];  [1];  [1];  [1];  [1];  [1];  [4]; ORCiD logo [5]
  1. Department of Chemistry and Biochemistry Florida State University Tallahassee FL 32306 USA
  2. Materials Science and Engineering Program Florida State University Tallahassee FL 32306 USA
  3. Department of Physics Florida State University Tallahassee FL 32306 USA
  4. Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology Daejeon 34141 Republic of Korea
  5. Department of Chemistry and Biochemistry Florida State University Tallahassee FL 32306 USA, Materials Science and Engineering Program Florida State University Tallahassee FL 32306 USA

Abstract Surface passivation of perovskite solar cells (PSCs) using a low‐cost industrial organic pigment quinacridone (QA) is presented. The procedure involves solution processing a soluble derivative of QA, N , N ‐bis(tert‐butyloxycarbonyl)‐quinacridone (TBOC‐QA), followed by thermal annealing to convert TBOC‐QA into insoluble QA. With halide perovskite thin films coated by QA, PSCs based on methylammonium lead iodide (MAPbI 3 ) showed significantly improved performance with remarkable stability. A PCE of 21.1 % was achieved, which is much higher than 18.9 % recorded for the unmodified devices. The QA coating with exceptional insolubility and hydrophobicity also led to greatly enhanced contact angle from 35.6° for the pristine MAPbI 3 thin films to 77.2° for QA coated MAPbI 3 thin films. The stability of QA passivated MAPbI 3 perovskite thin films and PSCs were significantly enhanced, retaining about 90 % of the initial efficiencies after more than 1000 hours storage under ambient conditions.

Sponsoring Organization:
USDOE
OSTI ID:
1724438
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 133 Journal Issue: 5; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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