Dual-side interfacial passivation of FAPbI3 perovskite film by Naphthylmethylammonium iodide for highly efficient and stable perovskite solar cells

Hatamvand M., Gholipour S., Chen M., Zhou Y., Jiang T., Hu Z., ...More

Chemical Engineering Journal, vol.460, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 460
  • Publication Date: 2023
  • Doi Number: 10.1016/j.cej.2023.141788
  • Journal Name: Chemical Engineering Journal
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aqualine, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, Food Science & Technology Abstracts, INSPEC, Pollution Abstracts, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Perovskite solar cells, Interfacial passivation, Double -side passivation, Defect passivation, Naphthylmethylammonium Iodide (NMAI), PERFORMANCE, STABILITY, CHLORIDE, QUALITY
  • Middle East Technical University Affiliated: Yes

Abstract

Interfacial passivation has been considered as an effective strategy to improve the performance of perovskite solar cells (PSCs) by modifying defect trap states between perovskite and charge transport layers. Here, we apply Naphthylmethylammonium Iodide (NMAI) salt to passivate the double-side interfaces from the perovskite/electron transport layer (ETL) and perovskite/hole transport layer (HTL). It demonstrates that using NMAI to suppress the interface defects from perovskite film can effectively decrease non-radiative recombination, extend the carrier recombination lifetime (from 4 to 113 ns), and boost PSCs device performance. Additionally, the judicious control of the interaction between perovskite and NMAI molecules can further optimize the homogenous morphology and crystallinity of the perovskite absorber layer. The double-side NMAI passivated device achieved a decent 22.97 % power conversion efficiency (PCE) with 1.11 V of open-circuit voltage (VOC), 80.35 % fill factor (FF) and short-circuit current (JSC) of 25.77 mA cm−2, compared to the control device (19.56 % PCE in conjunction with an VOC of 1.01 V, FF of 79.67 %, and JSC of 24.37 mA cm−2). Moreover, the unencapsulated devices with double-side NMAI passivation layers maintain 73 % of initial PCE after 432 h, at room temperature, under a nitrogen atmosphere, and in dark conditions. This study proposes a facile and effective method to passivate the perovskite/ETL and perovskite/HTL interfaces via NMAI spin-coating process.