Aufgrund von Vorbereitungen auf eine neue Version von KOPS, können am Montag, 6.2. und Dienstag, 7.2. keine Publikationen eingereicht werden. (Due to preparations for a new version of KOPS, no publications can be submitted on Monday, Feb. 6 and Tuesday, Feb. 7.)
Type of Publication: | Journal article |
Publication status: | Published |
Author: | Vasilopoulou, Maria; Yusoff, Abd Rashid Bin Mohd; Kuganathan, Navaratnarajah; Bao, Xichang; Verykios, Apostolis; Polydorou, Ermioni; Armadorou, Konstantina-Kalliopi; Soultati, Anastasia; Haider, Muhammad Irfan; Fakharuddin, Azhar et al. |
Year of publication: | 2020 |
Published in: | Nano Energy ; 70 (2020). - 104508. - Elsevier. - ISSN 2211-2855 |
DOI (citable link): | https://dx.doi.org/10.1016/j.nanoen.2020.104508 |
Summary: |
The design and development of novel materials with superior charge transport capabilities plays an essential role for advancing the performance of electronic devices. Ternary and doped oxides can be potentially explored because of their tailored electronic energy levels, exceptional physical properties, high electrical conductivity, excellent robustness and enhanced chemical stability. Here, a route for improving metal oxide characteristics is proposed by preparing a novel ternary oxide, namely, carbon-doped tantalum dioxyfluoride (TaO2FCx) through a straightforward synthetic route and exploring its effectiveness as an electron transport material in optoelectronic devices based on organic semiconductors. Among other devices, we fabricated fluorescent green organic light emitting diodes with current efficiencies of 16.53 cd/A and single-junction non-fullerene organic solar cells reaching power conversion efficiencies of 14.14% when using the novel oxide as electron transport material. Our devices also exhibited the additional advantage of high operational and temporal stability. Non-fullerene OSCs based on the novel compound showed unprecedented stability when exposed to UV light in air due to the non-defective nature of TaO2FCx. We employed a tank of experiments combined with theoretical calculations to unravel the performance merits of this novel compound. This study reveals that properly engineered ternary oxides, in particular, TaO2FCx or analogous materials can enable efficient electron transport in organic optoelectronics and are proposed as an attractive route for the broader field of optoelectronic devices including metal-organic perovskite, colloidal quantum dot and silicon optoelectronics.
|
Subject (DDC): | 530 Physics |
Keywords: | Tantalum oxyfluorides; Carbon doping; Organic light emitting diodes; Organic solar cells; Non-fullerene acceptors; Electron transport layer |
Bibliography of Konstanz: | Yes |
Refereed: | Yes |
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
VASILOPOULOU, Maria, Abd Rashid Bin Mohd YUSOFF, Navaratnarajah KUGANATHAN, Xichang BAO, Apostolis VERYKIOS, Ermioni POLYDOROU, Konstantina-Kalliopi ARMADOROU, Anastasia SOULTATI, Muhammad Irfan HAIDER, Azhar FAKHARUDDIN, 2020. A carbon-doped tantalum dioxyfluoride as a superior electron transport material for high performance organic optoelectronics. In: Nano Energy. Elsevier. 70, 104508. ISSN 2211-2855. Available under: doi: 10.1016/j.nanoen.2020.104508
@article{Vasilopoulou2020-04carbo-50018, title={A carbon-doped tantalum dioxyfluoride as a superior electron transport material for high performance organic optoelectronics}, year={2020}, doi={10.1016/j.nanoen.2020.104508}, volume={70}, issn={2211-2855}, journal={Nano Energy}, author={Vasilopoulou, Maria and Yusoff, Abd Rashid Bin Mohd and Kuganathan, Navaratnarajah and Bao, Xichang and Verykios, Apostolis and Polydorou, Ermioni and Armadorou, Konstantina-Kalliopi and Soultati, Anastasia and Haider, Muhammad Irfan and Fakharuddin, Azhar}, note={Article Number: 104508} }