Improved Charge Transport and Device Performance in p-i-n Carbon Electrode Perovskite Solar Cells Using SiC-APTES Additive.

Authors

Mikhail Pylnev, Ryosuke Nishikubo, Tomoya Nakamura, Ryoji Shimomura, Atsushi Wakamiya, Akinori Saeki

Published in

Small (Weinheim an der Bergstrasse, Germany). Pages e74393. Jul 06, 2026. Epub Jul 06, 2026.

Abstract

Carbon-based electrodes offer a low-cost and stable alternative to noble metals in lead halide perovskite solar cells (PSCs), yet their integration into high-performing planar p-i-n architectures remains limited by poor interfacial contact and processing-induced damage to thin electron transport layers (ETLs). Here, we introduce 3-aminopropyltriethoxysilane (APTES)-functionalized cubic SiC (SiC-APTES) nanoparticles as a novel ETL-like additive for carbon pastes (CP). Surface functionalization enables uniform dispersion, dramatically improves the rheology of CP, and promotes intimate contact with the ETL. The SiC-APTES additive to CP boosts the power conversion efficiency from 14.75% to 18.43%, by reducing the series resistance and hysteresis. The resulting devices exhibit good stability under ambient operation, positioning the SiC-APTES additive as an effective strategy for low-cost p-i-n carbon-electrode PSCs toward future scalability.

PMID:
42405452
Bibliographic data and abstract were imported from PubMed on 06 Jul 2026.

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