Composite Hole-Transporting Materials Based on 9,10-Dimethoxyphenanthrene Cores and Spiro-OMeTAD for Efficient and Stable Perovskite Solar Cells DOI Creative Commons
Jijitha Vailassery, Gebremariam Zebene Wubie,

Jia-Wei She

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(20), P. 20638 - 20648

Published: May 14, 2025

The hole transport material (HTM) in perovskite solar cells (PSCs) is a critical component due to its profound influence on the extraction, surface passivation, shielding from moisture, and oxygen directly impacting overall performance stability of devices. widely used HTM, spiro-OMeTAD (2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenyl-amine)-9,9'-spirofluorene), for n-i-p PSCs suffers low conductivity poor mobility pristine form. In this work, we designed two structurally simple cost-effective isomeric small molecules (2,7-OPOT 3,6-OPOT), featuring 9,10-dimethoxyphenanthrene core D-π-D structure, mixed them with form composite HTMs, S-2,7-OPOT, S-3,6-OPOT. champion device S-3,6-OPOT-based HTM attained power conversion efficiency (PCE) 18.8% (J sc = 23.9 mA cm-2, V oc 1.05 V, FF 74.92%), outperforming devices based S-2,7-OPOT (18.6%) (17.7%). PSC also displayed superior durability, retaining over 81% initial PCE after 60 days ambient storage condition without encapsulation. These findings confirm that systematic mixing organic promising approach improve photovoltaic durability PSCs, even reduced dopant loading spiro-OMeTAD.

Language: Английский

Composite Hole-Transporting Materials Based on 9,10-Dimethoxyphenanthrene Cores and Spiro-OMeTAD for Efficient and Stable Perovskite Solar Cells DOI Creative Commons
Jijitha Vailassery, Gebremariam Zebene Wubie,

Jia-Wei She

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: 10(20), P. 20638 - 20648

Published: May 14, 2025

The hole transport material (HTM) in perovskite solar cells (PSCs) is a critical component due to its profound influence on the extraction, surface passivation, shielding from moisture, and oxygen directly impacting overall performance stability of devices. widely used HTM, spiro-OMeTAD (2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenyl-amine)-9,9'-spirofluorene), for n-i-p PSCs suffers low conductivity poor mobility pristine form. In this work, we designed two structurally simple cost-effective isomeric small molecules (2,7-OPOT 3,6-OPOT), featuring 9,10-dimethoxyphenanthrene core D-π-D structure, mixed them with form composite HTMs, S-2,7-OPOT, S-3,6-OPOT. champion device S-3,6-OPOT-based HTM attained power conversion efficiency (PCE) 18.8% (J sc = 23.9 mA cm-2, V oc 1.05 V, FF 74.92%), outperforming devices based S-2,7-OPOT (18.6%) (17.7%). PSC also displayed superior durability, retaining over 81% initial PCE after 60 days ambient storage condition without encapsulation. These findings confirm that systematic mixing organic promising approach improve photovoltaic durability PSCs, even reduced dopant loading spiro-OMeTAD.

Language: Английский

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