File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Dual Surface Modifications of NiOx/Perovskite Interface for Enhancement of Device Stability

TitleDual Surface Modifications of NiOx/Perovskite Interface for Enhancement of Device Stability
Authors
Keywordsflexible solar cells
halide perovskite
interface modification
solar cells
stability testing
Issue Date8-May-2023
PublisherAmerican Chemical Society
Citation
ACS Applied Materials and Interfaces, 2023, v. 15, n. 20, p. 24437-24447 How to Cite?
AbstractVarious phosphonic acid based self-assembled monolayers (SAMs) have been commonly used for interface modifications in inverted perovskite solar cells. This typically results in significant enhancement of the hole extraction and consequent increase in the power conversion efficiency. However, the surface coverage and packing density of SAM molecules can vary, depending on the chosen SAM material and underlying oxide layer. In addition, different SAM molecules have diverse effects on the interfacial energy level alignment and perovskite film growth, resulting in complex relationships between surface modification, efficiency, and lifetime. Here we show that ethanolamine surface modification combined with [2-(9H-carbazol-9-yl)ethyl]-phosphonic acid (2PACz) results in significant improvement in device stability compared to devices with 2PACz modification only. The significantly smaller size of ethanolamine enables it to fill any gaps in 2PACz coverage and provide improved interfacial defect passivation, while its different chemical structure enables it to provide complementary effects to 2PACz passivation. Consequently, the perovskite films are more stable under illumination (slower photoinduced segregation), and the devices exhibit significant stability enhancement. Despite similar power conversion efficiencies (PCE) between 2PACz only and combined ethanolamine-2PACz modification (PCE of champion devices similar to 21.6-22.0% for rigid and similar to 20.2-21.0% for flexible devices), the T-80 lifetime under simulated solar illumination in ambient is improved more than 15 times for both and flexible devices.
Persistent Identifierhttp://hdl.handle.net/10722/331107
ISSN
2023 Impact Factor: 8.3
2023 SCImago Journal Rankings: 2.058
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLin, JY-
dc.contributor.authorWang, YT-
dc.contributor.authorKhaleed, A-
dc.contributor.authorSyed, AA-
dc.contributor.authorHe, YL-
dc.contributor.authorChan, CCS-
dc.contributor.authorLi, Y-
dc.contributor.authorLiu, K-
dc.contributor.authorLi, G-
dc.contributor.authorWong, KS-
dc.contributor.authorPopovic, J-
dc.contributor.authorFan, J-
dc.contributor.authorNg, AMC-
dc.contributor.authorDjurisic, AB-
dc.date.accessioned2023-09-21T06:52:49Z-
dc.date.available2023-09-21T06:52:49Z-
dc.date.issued2023-05-08-
dc.identifier.citationACS Applied Materials and Interfaces, 2023, v. 15, n. 20, p. 24437-24447-
dc.identifier.issn1944-8244-
dc.identifier.urihttp://hdl.handle.net/10722/331107-
dc.description.abstractVarious phosphonic acid based self-assembled monolayers (SAMs) have been commonly used for interface modifications in inverted perovskite solar cells. This typically results in significant enhancement of the hole extraction and consequent increase in the power conversion efficiency. However, the surface coverage and packing density of SAM molecules can vary, depending on the chosen SAM material and underlying oxide layer. In addition, different SAM molecules have diverse effects on the interfacial energy level alignment and perovskite film growth, resulting in complex relationships between surface modification, efficiency, and lifetime. Here we show that ethanolamine surface modification combined with [2-(9H-carbazol-9-yl)ethyl]-phosphonic acid (2PACz) results in significant improvement in device stability compared to devices with 2PACz modification only. The significantly smaller size of ethanolamine enables it to fill any gaps in 2PACz coverage and provide improved interfacial defect passivation, while its different chemical structure enables it to provide complementary effects to 2PACz passivation. Consequently, the perovskite films are more stable under illumination (slower photoinduced segregation), and the devices exhibit significant stability enhancement. Despite similar power conversion efficiencies (PCE) between 2PACz only and combined ethanolamine-2PACz modification (PCE of champion devices similar to 21.6-22.0% for rigid and similar to 20.2-21.0% for flexible devices), the T-80 lifetime under simulated solar illumination in ambient is improved more than 15 times for both and flexible devices.-
dc.languageeng-
dc.publisherAmerican Chemical Society-
dc.relation.ispartofACS Applied Materials and Interfaces-
dc.subjectflexible solar cells-
dc.subjecthalide perovskite-
dc.subjectinterface modification-
dc.subjectsolar cells-
dc.subjectstability testing-
dc.titleDual Surface Modifications of NiOx/Perovskite Interface for Enhancement of Device Stability-
dc.typeArticle-
dc.identifier.doi10.1021/acsami.3c02156-
dc.identifier.pmid37150934-
dc.identifier.scopuseid_2-s2.0-85159613398-
dc.identifier.volume15-
dc.identifier.issue20-
dc.identifier.spage24437-
dc.identifier.epage24447-
dc.identifier.eissn1944-8252-
dc.identifier.isiWOS:000985649400001-
dc.publisher.placeWASHINGTON-
dc.identifier.issnl1944-8244-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats