000170002 001__ 170002
000170002 005__ 20260316092629.0
000170002 0247_ $$2doi$$a10.1039/d6nr00102e
000170002 0248_ $$2sideral$$a148558
000170002 037__ $$aART-2026-148558
000170002 041__ $$aeng
000170002 100__ $$aCao, Qianwen
000170002 245__ $$aBromine-functionalized carbazole derivatives in perovskite precursors: defect passivation for enhanced perovskite photovoltaics
000170002 260__ $$c2026
000170002 5060_ $$aAccess copy available to the general public$$fUnrestricted
000170002 5203_ $$aCarbazole phosphonic acid self-assembled monolayers (SAMs) have emerged as an effective strategy to enhance the performance of perovskite solar cells (PSCs) via interface engineering. While previous studies have mainly focused on their application at the hole transport layer (HTL), their roles within the perovskite layer itself remain underexplored. In this work, two carbazole-based SAM molecules, 2-(9H-carbazol-9-yl)ethylphosphonic acid (2PACz) and 2-(3,6-dibromo-9H-carbazol-9-yl)ethylphosphonic acid (Br-2PACz), were directly incorporated into perovskite precursors to investigate their influence on film formation and electronic structure. Compared with the control film, the incorporation of both 2PACz and Br-2PACz improved film uniformity and morphology, and significantly prolonged carrier lifetimes, indicating suppressed non-radiative recombination and reduced defect density. Notably, Br-2PACz shows a more pronounced effect: the bromine substituent enhances the electron-withdrawing character of the molecule, leading to a deeper highest occupied molecular orbital (HOMO) level and pronounced modulation of the interfacial electronic structure. As a result, the energy-level alignment at the perovskite/electron-transport interface is optimized, facilitating charge extraction and defect passivation. These synergistic effects contribute to higher power conversion efficiency (PCE). This work demonstrates an additive-engineering approach based on carbazole SAMs to control perovskite crystallization and interfacial energetics, providing a promising pathway toward high-efficiency PSCs.
000170002 536__ $$9info:eu-repo/grantAgreement/ES/MCIU/PID2022-140516OB-I00
000170002 540__ $$9info:eu-repo/semantics/embargoedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000170002 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000170002 700__ $$aWu, Lifang
000170002 700__ $$aWang, Ye
000170002 700__ $$aLi, Hengji
000170002 700__ $$aLiu, Xiaojie
000170002 700__ $$aXu, Tenglong
000170002 700__ $$aXiao, Qiling
000170002 700__ $$aXue, Chang
000170002 700__ $$aZou, Xingli
000170002 700__ $$aWu, Tianhao
000170002 700__ $$0(orcid)0000-0001-6040-1920$$aJuarez-Perez, Emilio J.
000170002 700__ $$0(orcid)0000-0001-7246-2149$$aHaro, Marta$$uUniversidad de Zaragoza
000170002 700__ $$aDonaev, S. B.
000170002 700__ $$aWang, Shenghao
000170002 7102_ $$12012$$2755$$aUniversidad de Zaragoza$$bDpto. Química Física$$cÁrea Química Física
000170002 773__ $$g(2026), [12 pp.]$$pNanoscale$$tNanoscale$$x2040-3364
000170002 8564_ $$s888438$$uhttps://zaguan.unizar.es/record/170002/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-02-18
000170002 8564_ $$s1760744$$uhttps://zaguan.unizar.es/record/170002/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2027-02-18
000170002 909CO $$ooai:zaguan.unizar.es:170002$$particulos$$pdriver
000170002 951__ $$a2026-03-16-08:16:37
000170002 980__ $$aARTICLE