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Accelerated aging of all-inorganic, interface-stabilized perovskite solar cells

Journal Article · · Science
 [1];  [2];  [3];  [4];  [1];  [5];  [5];  [4];  [1]
  1. Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA.
  2. Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544, USA.; Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ 08544, USA.
  3. Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ 08544, USA.
  4. Department of Physics, Chemistry, and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden.
  5. Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544, USA.

To understand degradation routes and improve the stability of perovskite solar cells (PSCs), accelerated aging tests are needed. Here, we use elevated temperatures (up to 110°C) to quantify the accelerated degradation of encapsulated CsPbI3PSCs under constant illumination. Incorporating a two-dimensional (2D) Cs2PbI2Cl2capping layer between the perovskite active layer and hole-transport layer stabilizes the interface while increasing power conversion efficiency of the all-inorganic PSCs from 14.9 to 17.4%. Devices with this 2D capping layer did not degrade at 35°C and required >2100 hours at 110°C under constant illumination to degrade by 20% of their initial efficiency. Degradation acceleration factors based on the observed Arrhenius temperature dependence predict intrinsic lifetimes of 51,000 ± 7000 hours (>5 years) operating continuously at 35°C.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Organization:
USDOE Office of Science (SC)
DOE Contract Number:
SC0012704
OSTI ID:
1982960
Journal Information:
Science, Vol. 377, Issue 6603; ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English

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