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Improved ambient-stable perovskite solar cells enabled by a hybrid polymeric electron-transporting layer

Journal Article · · ChemSusChem
 [1];  [2];  [3];  [4];  [3];  [2]
  1. Univ. of Washington, Seattle, WA (United States); University of Washington
  2. Univ. of Washington, Seattle, WA (United States)
  3. Hong Kong Univ. of Science and Technology, Kowloon (Hong Kong)
  4. South China Univ. of Technology, Guangzhou (People's Republic of China)
+ Show Author Affiliations
In this study, an efficient inverted perovskite solar cell with decent ambient stability is successfully demonstrated by employing an n-type polymer, poly{[N,N’-bis(2-octyldodecyl)- 1,4,5,8-naphthalene diimide-2,6-diyl]-alt-5,5’-(2,2’-bithiophene)} (N2200), as the electron-transporting layer (ETL). The device performance can be further enhanced from a power conversion efficiency (PCE) of 15 to 16.8% by tailoring the electronic properties of N2200 with a polymeric additive, poly[9,9-bis(6’- (N,N’-diethylamino)propyl)-fluorene-alt-9,9-bis(3-ethyl(oxetane- 3-ethyloxy)-hexyl) fluorene] (PFN-Ox). More importantly, the device derived from this hybrid ETL can maintain good ambient stability inherent from the pristine N2200 ETL, for which 60–70% of initial PCE can be retained after being stored in air with 10–20% humidity for 45 days.
Research Organization:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Contributing Organization:
This work was supported by the National Science Foundation (DMR-1608279), the Office of Naval Research (N00014-14-1-0246), the Asian Office of Aerospace R&D (FA2386-15-1-4106), and the Department of Energy SunShot (DE-EE 0006710). A.J. thanks the Boeing-Johnson Foundation for financial support. H.Y. thanks Hong Kong Innovation and Technology Commission for the support through ITC-CNERC14SC01.
Grant/Contract Number:
EE0006710
OSTI ID:
1343594
Report Number(s):
DOE-UW-Jen--26
Journal Information:
ChemSusChem, Journal Name: ChemSusChem Journal Issue: 18 Vol. 9; ISSN 1864-5631
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (6)

Molecular Aggregation of Naphthalene Diimide(NDI) Derivatives in Electron Transport Layers of Inverted Perovskite Solar Cells and Their Influence on the Device Performance journal November 2019
Efficient Inverted Perovskite Solar Cells by Employing N‐Type (D–A 1 –D–A 2 ) Polymers as Electron Transporting Layer journal October 2018
Electron-Transport Materials in Perovskite Solar Cells journal July 2018
Recent advances in perovskite solar cells: efficiency, stability and lead-free perovskite journal January 2017
An integrated approach towards the fabrication of highly efficient and long-term stable perovskite nanowire solar cells journal January 2017
Mechanically robust and high-performance ternary solar cells combining the merits of all-polymer and fullerene blends journal January 2018

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Related Subjects

14 SOLAR ENERGY
electron-transport layer
n-type polymer
perovskite
solar cells
stability