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Title: Spontaneously supersaturated nucleation strategy for high reproducible and efficient perovskite solar cells

Journal Article · · Chemical Engineering Journal
 [1];  [1];  [2];  [2];  [2];  [3];  [2];  [2];  [3];  [1];  [1]
  1. Jackson State Univ., Jackson, MS (United States)
  2. Univ. of Southern Mississippi, Hattiesburg, MS (United States)
  3. Syracuse Univ., NY (United States)

High-quality perovskite films are predominantly prepared by anti-solvent assisted spin-coating method. However, small device size and narrow operation window limit their applications in practical and scalable production. Here, a spontaneously supersaturated nucleation strategy is developed to fabricate high-quality perovskite films without any antisolvents. The rapid precipitation behavior of the precursor solutions could be triggered by the volatilization of methylamine ethanol at the initial film formation stage, forming uniform and compact intermediate phase films. Mirror-like large area (10 cm × 10 cm) methylammonium lead triiodide (MAPbI3) perovskite films with micrometer-sized grains can be achieved by phase transition via annealing. The average power conversion efficiency (PCE) of 19.4% is achieved for 0.1 cm2 perovskite solar cells (PSCs). The 1 cm2 device shows a PCE of 17.57% and retains 96.8% after aging for 39 days in the air with a relative humidity of 5–30%. The perovskite module based on the perovskite films prepared by our strategy exhibits a PCE of 13.13%. The perovskite film fabrication method developed in this work shows high reproducibility of the fabrication process due to the spontaneous nucleation process. Meanwhile, it also exhibits significant potential in the application of scalable solution processing deposition techniques toward the commercialization of PSCs

Research Organization:
Univ. of Southern Mississippi, Hattiesburg, MS (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); NSF-PREM
Grant/Contract Number:
SC0019361; 1757220; DMR-1826886
OSTI ID:
1774208
Alternate ID(s):
OSTI ID: 1985425
Journal Information:
Chemical Engineering Journal, Vol. 405; ISSN 1385-8947
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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