2026-10-14T10:42:28Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34037305 2026-10-01T00:09:42Z category_915 category_7 category_272 category_873 category_502 portal_63 item_type_6 month_year_10_2026

Interstitial Rare-Earth Doping of FAPbI₃ Perovskite Nanocrystals under Mild Ambient Conditions Abdurrahman Ihsanuddin (25147114) Wei Zhu (23646) Xinyu Zhao (102214) Mazaya Basmalah (25147117) Xuliang Zhang (350700) Chenyu Zhao (8843171) Fitri Aulia Permatasari (6191834) Ferry Iskandar (2273857) Jianyu Yuan (1484992) Physical Sciences not elsewhere classified Medicine Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Astronomical and Space Sciences not elsewhere classified photovoltaic performance together improved stability relative 50 ° c metal doping strategies inert gas atmosphere 3 </ sub doped perovskite nanocrystals mild ambient conditions ambient atmosphere perovskite nanocrystals mild conditions perovskite materials successfully introduced prior approaches optical properties many applications interstitial sites high temperatures formation energy film samples earth doping The rare-earth (RE) metal doping strategies have been investigated for many applications in perovskite materials. However, prior approaches to synthesizing RE-doped perovskite nanocrystals (PNCs) have predominantly required harsh synthesis conditions, including an inert gas atmosphere and high temperatures. Here, we present a doping strategy using four RE ions (La³⁺, Nd³⁺, Gd³⁺, and Er³⁺) doped into FAPbI₃ PNCs under mild conditions (50 °C) in an ambient atmosphere. Density functional theory calculations were performed to rationalize the RE incorporation by evaluating the formation energy of possible dopant configurations within the FAPbI₃ lattice. The results demonstrated that RE ions were successfully introduced into interstitial sites in the FAPbI₃ lattice under mild conditions. RE-doped FAPbI₃ PNCs were demonstrated to preserve the structure of α-FAPbI₃ PNCs, while improving the optical properties in colloidal and thin-film samples, delivering an enhanced power conversion efficiency of 18.65% in photovoltaic performance together with improved stability relative to pristine PNCs. 2026-09-30T00:00:00Z Text Journal contribution 10.1021/acs.nanolett.6c03556.s001 https://figshare.com/articles/journal_contribution/Interstitial_Rare-Earth_Doping_of_FAPbI_sub_3_sub_Perovskite_Nanocrystals_under_Mild_Ambient_Conditions/34037305 CC BY-NC 4.0