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Efficient, stable silicon tandem cells enabled by anion-engineered wide-bandgap perovskites

Journal Article · · Science
 [1];  [2];  [3];  [4];  [5];  [4];  [1];  [4];  [1];  [3];  [4];  [1];  [1];  [6];  [2];  [7];  [3];  [4];  [8];  [1]
  1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.
  2. Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA.
  3. Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea.
  4. National Renewable Energy Laboratory, Golden, CO 80401, USA.
  5. National Renewable Energy Laboratory, Golden, CO 80401, USA., Materials Science and Engineering Program, University of Colorado Boulder, Boulder, CO 80309, USA.
  6. Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea.
  7. National Renewable Energy Laboratory, Golden, CO 80401, USA., Department of Physics, University of Colorado Boulder, Boulder, CO 80309, USA., Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO 80309, USA.
  8. National Renewable Energy Laboratory, Golden, CO 80401, USA., Department of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea.

Maximizing the power conversion efficiency (PCE) of perovskite/silicon tandem solar cells that can exceed the Shockley-Queisser single-cell limit requires a high-performing, stable perovskite top cell with a wide bandgap. We developed a stable perovskite solar cell with a bandgap of ~1.7 electron volts that retained more than 80% of its initial PCE of 20.7% after 1000 hours of continuous illumination. Anion engineering of phenethylammonium-based two-dimensional (2D) additives was critical for controlling the structural and electrical properties of the 2D passivation layers based on a lead iodide framework. The high PCE of 26.7% of a monolithic two-terminal wide-bandgap perovskite/silicon tandem solar cell was made possible by the ideal combination of spectral responses of the top and bottom cells.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
Korea Institute of Energy Technology Evaluation and Planning (KETEP); Ministry of Trade Industry & Energy (MOTIE) (Korea); National Research Foundation of Korea (NRF); National Science Foundation (NSF); USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1615092
Alternate ID(s):
OSTI ID: 1659925
Report Number(s):
NREL/JA-5900-76076; /sci/368/6487/155.atom
Journal Information:
Science, Journal Name: Science Journal Issue: 6487 Vol. 368; ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)Copyright Statement
Country of Publication:
United States
Language:
English

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