- Title
- Boosting inverted perovskite solar cell performance by using 9,9-bis(4-diphenylaminophenyl)fluorene functionalized with triphenylamine as a dopant-free hole transporting material
- Creator
- Pham, Hong Duc; Gil-Escrig, Lidón; Feron, Krishna; Manzhos, Sergei; Albrecht, Steve; Bolink, Henk J.; Sonar, Prashant
- Relation
- Journal of Materials Chemistry A Vol. 7, Issue 20, p. 12507-12517
- Publisher Link
- http://dx.doi.org/10.1039/c9ta01681c
- Publisher
- Royal Society of Chemistry
- Resource Type
- journal article
- Date
- 2019
- Description
- In this study, two newly developed small molecules based on 9,9-bis(4-diphenylaminophenyl)fluorene functionalized with triphenylamine moieties, namely TPA-2,7-FLTPA-TPA and TPA-3,6-FLTPA-TPA, are designed, synthesized and characterized. The electrochemical, optical and thermal properties of both materials are investigated using various techniques. Afterwards, these materials are employed as dopant-free hole transporting materials (HTMs) in planar inverted perovskite solar cell devices with the aim of determining the device performance and studying their stability in comparison with reference N4,N4,N4′′,N4′′-tetra([1,10-biphenyl]-4-yl)-[1,1′:4′,1′′-terphenyl]-4,4′′-diamine (TaTm)-based devices. Under 1 sun conditions, TPA-3,6-FLTPA-TPA-based devices achieve a power conversion efficiency (PCE) of 13.9% whereas TPA-2,7-FLTPA-TPA-based devices exhibit the highest PCE of 17.1% mainly due to an improvement in the fill factor (FF). Meanwhile, the devices prepared using TaTm as the reference HTM exhibit an overall efficiency of 15.9%. In addition to the higher efficiency, our newly developed HTM TPA-2,7-FLTPA-TPA-based devices demonstrate good stability which is comparable to those with TaTm under similar aging test conditions.
- Subject
- molecular design; solar cell performance; molecules; organic counterparts; SDG 7; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1470522
- Identifier
- uon:48493
- Identifier
- ISSN:2050-7488
- Language
- eng
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