Lattice Matching Anchoring of Hole-Selective Molecule on Halide Perovskite Surfaces for n-i-p Solar Cells

Lattice Matching Anchoring of Hole-Selective Molecule on Halide Perovskite Surfaces for n-i-p Solar Cells

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2024) vom: 27. Nov., Seite e2414576
1. Verfasser: Wu, Tianhao (VerfasserIn)
Weitere Verfasser: Raju, Telugu Bhim, Shang, Juan, Wu, Lifang, Song, Jun Tae, Senevirathne, Chathuranganie A M, Staykov, Aleksandar, Wang, Shenghao, Ida, Shintaro, Shibayama, Naoyuki, Miyasaka, Tsutomu, Matsushima, Toshinori, Guo, Zhanglin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article hole‐selective contact lattice matching perovskite solar cell perovskite surface anchoring self‐assembled molecule
Beschreibung
Zusammenfassung:© 2024 Wiley‐VCH GmbH.
Exploiting the self-assembled molecules (SAMs) as hole-selective contacts has been an effective strategy to improve the efficiency and long-term stability of perovskite solar cells (PSCs). Currently, research works are focusing on constructing SAMs on metal oxide surfaces in p-i-n PSCs, but realizing a stable and dense SAM contact on halide perovskite surfaces in n-i-p PSCs is still challenging. In this work, the hole-selective molecule for n-i-p device is developed featuring a terephthalic methylammonium core structure that possesses double-site anchoring ability and a matching diameter (6.36 Å) with the lattice constant of formamidinium lead iodide (FAPbI3) perovskite (6.33 Å), which facilitates an ordered and full-coverage SAM atop FAPbI3 perovskite. Moreover, theoretical calculations and experimental results indicate that compared to the frequently used acid or ester anchoring groups, this ionic anchoring group with a dipolar charge distribution has much larger adsorption energy on both organic halide terminated and lead halide terminated surfaces, resulting in synergistic improvement of carrier extraction and defect passivation ability. Benefiting from these merits, the efficiency of PSCs is increased from 21.68% to 24.22%. The long-term operational stability under white LED illumination (100 mW cm-2) and at a high temperature of 85 °C is also much improved
Beschreibung:Date Revised 28.11.2024
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202414576