Oriented nucleation in formamidinium perovskite for photovoltaics

Shi P., Ding Y., Ding B., Xing Q., Kodalle T., Sutter-Fella C. M., ...More

Nature, vol.620, no.7973, pp.323-327, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 620 Issue: 7973
  • Publication Date: 2023
  • Doi Number: 10.1038/s41586-023-06208-z
  • Journal Name: Nature
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, International Bibliography of Social Sciences, Aerospace Database, Agricultural & Environmental Science Database, Animal Behavior Abstracts, Applied Science & Technology Source, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Art Source, Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, EBSCO Education Source, EMBASE, Environment Index, Food Science & Technology Abstracts, Gender Studies Database, Geobase, INSPEC, MEDLINE, Metadex, MLA - Modern Language Association Database, Pollution Abstracts, Psycinfo, Public Affairs Index, Veterinary Science Database, zbMATH, DIALNET, Civil Engineering Abstracts
  • Page Numbers: pp.323-327
  • Marmara University Affiliated: Yes

Abstract

The black phase of formamidinium lead iodide (FAPbI3) perovskite shows huge promise as an efficient photovoltaic, but it is not favoured energetically at room temperature, meaning that the undesirable yellow phases are always present alongside it during crystallization1–4. This problem has made it difficult to formulate the fast crystallization process of perovskite and develop guidelines governing the formation of black-phase FAPbI3(refs.5,6). Here we use in situ monitoring of the perovskite crystallization process to report an oriented nucleation mechanism that can help to avoid the presence of undesirable phases and improve the performance of photovoltaic devices in different film-processing scenarios. The resulting device has a demonstrated power-conversion efficiency of 25.4% (certified 25.0%) and the module, which has an area of 27.83 cm2, has achieved an impressive certified aperture efficiency of 21.4%.