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Title: Lead-free inverted planar formamidinium tin triiodide perovskite solar cells achieving power conversion efficiencies up to 6.22%

Efficient lead (Pb)-free inverted planar formamidinium tin triiodide (FASnI 3) perovskite solar cells (PVSCs) are demonstrated. Our FASnI 3 PVSCs achieved average power conversion efficiencies (PCEs) of 5.41% ± 0.46% and a maximum PCE of 6.22% under forward voltage scan. Here, the PVSCs exhibit small photocurrent–voltage hysteresis and high reproducibility. The champion cell shows a steady-state efficiency of ≈6.00% for over 100 s.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [2] ;  [3] ;  [4] ;  [2]
  1. The Univ. of Toledo, Toledo, OH (United States); Southeast Univ., Nanjing (People's Republic of China)
  2. The Univ. of Toledo, Toledo, OH (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Southeast Univ., Nanjing (People's Republic of China)
Publication Date:
Report Number(s):
NREL/JA-5K00-67095
Journal ID: ISSN 0935-9648
Grant/Contract Number:
AC36-08GO28308; FOA-0000990
Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 28; Journal Issue: 42; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; lead-free; perovskite solar cells; pinhole-free; SnF2 additives; uniform perovskites; FASnI3
OSTI Identifier:
1331968
Alternate Identifier(s):
OSTI ID: 1401478