InterfaceEngineeringwithCo-Self-AssembledMonolayersfor ImprovedChargeExtractionandMorphologyinOrganic Photovoltaics

Jiang, Bing-Huang and Huang, Zih-Ruei and Su, Yu-Wei and Shi, Zhong-En and Hasbullah, Nurul Fadzlin and Hsu, Yu-Chih and yu, Yang-Yen and chen, Chih-Ping (2025) InterfaceEngineeringwithCo-Self-AssembledMonolayersfor ImprovedChargeExtractionandMorphologyinOrganic Photovoltaics. ACS Applied Materials & Interfaces, 17 (https://doi.org/10.1021/acsami.5c17695). pp. 63996-64005.

Preview	PDF Download (9MB) | Preview
Preview	PDF Download (9MB) | Preview

Abstract

Carbazole-based self-assembledmonolayers (SAMs), such as the widelyused[2-(9H-carbazol-9-yl)ethyl]phosphonicacid(2PACz),havesignificantly improvedtheperformanceofconventionalorganicphotovoltaics(OPVs)byserving asefficienthole-selectivelayers(HSLs).However, theintrinsiclimitationsof2PACz havehinderedfurtherenhancementsindeviceperformance.Althoughthemolecular modificationof2PACzisacommonstrategytoovercometheseconstraints, itoften introduceschallenges. Inthis study,wepresent acoself-assembledmonolayer(co SAM) approach that blends 2PACz with 4PDACB to address the drawbacks associatedwithsingle-componentSAMs.Thisco-SAMstrategyeffectivelybalances electrodework function tuning, interfacial quality improvement, andactive layer blendmorphologyoptimization, therebyenablingenhancedoverallperformance in OPVs.ByoptimizingPM6:Y6-basedOPVsusingtheco-SAMstrategy,weachieved anoutstandingpowerconversionefficiency(PCE)of17.55%,significantlyexceeding thePCEsofdeviceswithsingle-layer2PACz(17.08%)and4PDACB(16.13%).The effectivenessof this approachwas furtherdemonstrated internaryOPVs,whereco-SAMsenabledamaximumPCEof 18.69%. Theseresultsunderscorethecritical roleof surfaceengineering incontrollingfilmmorphologyandprovidevaluable insights for advancingOPVperformance.

Item Type:	Article (Journal)
Uncontrolled Keywords:	organicphotovoltaic, self-assembledmonolayer, hole selective layer, conjugatedpolymer, hole transport layer
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr Nurul Fadzlin Hasbullah
Date Deposited:	22 Dec 2025 16:43
Last Modified:	22 Dec 2025 16:43
Queue Number:	2025-12-Q805
URI:	http://irep.iium.edu.my/id/eprint/125634

Actions (login required)

View Item