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Title: Fabrication of Nickel Oxide Nanopillar Arrays on Flexible Electrodes for Highly Efficient Perovskite Solar Cells

Journal Article · · Nano Letters
 [1]; ORCiD logo [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1]; ORCiD logo [3]; ORCiD logo [4]
  1. Soochow University, Suzhou (China)
  2. Soochow University, Suzhou (China); Hong Kong Baptist University (HKBU), Kowloon Tong (China)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
  4. Hong Kong Baptist University (HKBU), Kowloon Tong (China); Shenzhen Virtual University Park, Guangdong (China)

Semiconductor nanomaterials with controlled morphologies and architectures are of critical importance for high-performance optoelectronic devices. However, the fabrication of such nanomaterials on polymer-based flexible electrodes is particularly challenging due to degradation of the flexible electrodes at a high temperature. In this paper, we report the fabrication of nickel oxide nanopillar arrays (NiOx NaPAs) on a flexible electrode by vapor deposition, which enables highly efficient perovskite solar cells (PSCs). The NiOx NaPAs exhibit an enhanced light transmittance for light harvesting, prohibit exciton recombination, promote irradiation-generated hole transport and collection, and facilitate the formation of large perovskite grains. These advantageous features result in a high efficiency of 20% and 17% for the rigid and flexible PSCs, respectively. Additionally, the NaPAs show no cracking after 500 times of bending, consistent with the mechanic simulation results. Lastly, this robust fabrication opens a new opportunity for the fabrication of a large area of high-performance flexible optoelectronic devices.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000; AC52-06NA25396; NA0003525
OSTI ID:
1526213
Report Number(s):
SAND-2019-6162J; 676098
Journal Information:
Nano Letters, Vol. 19, Issue 6; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

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