Increasing Electrode Work Function Using a Natural Molecule
Abstract Providing sustainability to organic electronics is highly demanded to reduce the negative impact of organic devices on environments and human health upon their disposal. To attain biodegradability and biocompatibility of the electronic devices, utilization of the natural molecules for the d...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2023-07-01
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| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202201800 |
| _version_ | 1797772560217145344 |
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| author | Kouki Akaike Takuya Hosokai Yutaro Ono Ryohei Tsuruta Yoichi Yamada |
| author_facet | Kouki Akaike Takuya Hosokai Yutaro Ono Ryohei Tsuruta Yoichi Yamada |
| author_sort | Kouki Akaike |
| collection | DOAJ |
| description | Abstract Providing sustainability to organic electronics is highly demanded to reduce the negative impact of organic devices on environments and human health upon their disposal. To attain biodegradability and biocompatibility of the electronic devices, utilization of the natural molecules for the device constituents is essential. In this study, it is reported that the adsorption of caffeic acid (CfA), a polar phenylpropanoid that plants bio‐synthesize, universally increases work functions (WFs) of practical electrodes and organic films. Either vacuum‐depositing or spin‐casting CfA films on the electrode materials form a dipole layer with the negative charges on the carboxyl group exposed to the outermost surface. The preferential adsorption of the catechol moiety of CfA onto substrate surfaces drives the molecular orientation, leading to the WF increase up to 0.7 eV. As a consequence, the single‐layer devices with the CfA interlayer facilitate the hole injection in forward bias by a factor of 101–102, which validates the usability of the natural molecule for organic electronics. |
| first_indexed | 2024-03-12T21:53:41Z |
| format | Article |
| id | doaj.art-f347998057ba4dd69c6f625fee1a31b0 |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-12T21:53:41Z |
| publishDate | 2023-07-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-f347998057ba4dd69c6f625fee1a31b02023-07-26T01:35:17ZengWiley-VCHAdvanced Materials Interfaces2196-73502023-07-011019n/an/a10.1002/admi.202201800Increasing Electrode Work Function Using a Natural MoleculeKouki Akaike0Takuya Hosokai1Yutaro Ono2Ryohei Tsuruta3Yoichi Yamada4Nanomaterials Research Institute National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1‐1‐1 Tsukuba 305‐8565 JapanNational Metrology Institute of Japan National Institute of Advanced Industrial Science and Technology Central 5, Higashi 1‐1‐1 Tsukuba 305‐8565 JapanFaculty of Pure and Applied Sciences University of Tsukuba 1‐1‐1 Tennodai Tsukuba 305‐8573 JapanFaculty of Pure and Applied Sciences University of Tsukuba 1‐1‐1 Tennodai Tsukuba 305‐8573 JapanFaculty of Pure and Applied Sciences University of Tsukuba 1‐1‐1 Tennodai Tsukuba 305‐8573 JapanAbstract Providing sustainability to organic electronics is highly demanded to reduce the negative impact of organic devices on environments and human health upon their disposal. To attain biodegradability and biocompatibility of the electronic devices, utilization of the natural molecules for the device constituents is essential. In this study, it is reported that the adsorption of caffeic acid (CfA), a polar phenylpropanoid that plants bio‐synthesize, universally increases work functions (WFs) of practical electrodes and organic films. Either vacuum‐depositing or spin‐casting CfA films on the electrode materials form a dipole layer with the negative charges on the carboxyl group exposed to the outermost surface. The preferential adsorption of the catechol moiety of CfA onto substrate surfaces drives the molecular orientation, leading to the WF increase up to 0.7 eV. As a consequence, the single‐layer devices with the CfA interlayer facilitate the hole injection in forward bias by a factor of 101–102, which validates the usability of the natural molecule for organic electronics.https://doi.org/10.1002/admi.202201800caffeic acidelectrodesphenylpropanoidssustainable electronicswork function |
| spellingShingle | Kouki Akaike Takuya Hosokai Yutaro Ono Ryohei Tsuruta Yoichi Yamada Increasing Electrode Work Function Using a Natural Molecule Advanced Materials Interfaces caffeic acid electrodes phenylpropanoids sustainable electronics work function |
| title | Increasing Electrode Work Function Using a Natural Molecule |
| title_full | Increasing Electrode Work Function Using a Natural Molecule |
| title_fullStr | Increasing Electrode Work Function Using a Natural Molecule |
| title_full_unstemmed | Increasing Electrode Work Function Using a Natural Molecule |
| title_short | Increasing Electrode Work Function Using a Natural Molecule |
| title_sort | increasing electrode work function using a natural molecule |
| topic | caffeic acid electrodes phenylpropanoids sustainable electronics work function |
| url | https://doi.org/10.1002/admi.202201800 |
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