Epitaxial molecular heterojunction with spontaneous charge transfer: A novel strong acceptor, perfluorotetraazanaphthacene, on single-crystal pentacene

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals Pub Date : 2025-08-14 DOI:10.1016/j.synthmet.2025.117941

Yasuo Nakayama , Yuki Koyama , Satoshi Miyata , Junnosuke Miyamoto , Takuya Hosokai , Keisuke Fukutani , Satoshi Kera , Rosantha Kumara , Tomoyuki Koganezawa , Fumiya Kobayashi , Makoto Tadokoro

{"title":"Epitaxial molecular heterojunction with spontaneous charge transfer: A novel strong acceptor, perfluorotetraazanaphthacene, on single-crystal pentacene","authors":"Yasuo Nakayama , Yuki Koyama , Satoshi Miyata , Junnosuke Miyamoto , Takuya Hosokai , Keisuke Fukutani , Satoshi Kera , Rosantha Kumara , Tomoyuki Koganezawa , Fumiya Kobayashi , Makoto Tadokoro","doi":"10.1016/j.synthmet.2025.117941","DOIUrl":null,"url":null,"abstract":"<div><div>Acquiring an accurate understanding of donor–acceptor heterojunctions is essential in the field of organic optoelectronics. In this study, a novel strong acceptor molecule perfluorotetraazanaphthacene (F8-TANC) was deposited on single-crystal pentacene (PnSC) to form a well-defined molecular heterojunction with donor–acceptor electronic coupling. Surface X-ray diffraction revealed the epitaxial growth of F8-TANC, aligned along a unique direction on the PnSC surface. Additionally, photoemission results demonstrated upward band bending-like behaviors from the donor (p-type) PnSC side to the acceptor (n-type) F8-TANC side, driven by spontaneous charge transfer (CT) at the heterojunction. This study presents the first report of a donor–acceptor molecular heterojunction that achieves both well-defined epitaxial growth and ground state CT.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"314 ","pages":"Article 117941"},"PeriodicalIF":4.6000,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Synthetic Metals","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0379677925001171","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Acquiring an accurate understanding of donor–acceptor heterojunctions is essential in the field of organic optoelectronics. In this study, a novel strong acceptor molecule perfluorotetraazanaphthacene (F8-TANC) was deposited on single-crystal pentacene (PnSC) to form a well-defined molecular heterojunction with donor–acceptor electronic coupling. Surface X-ray diffraction revealed the epitaxial growth of F8-TANC, aligned along a unique direction on the PnSC surface. Additionally, photoemission results demonstrated upward band bending-like behaviors from the donor (p-type) PnSC side to the acceptor (n-type) F8-TANC side, driven by spontaneous charge transfer (CT) at the heterojunction. This study presents the first report of a donor–acceptor molecular heterojunction that achieves both well-defined epitaxial growth and ground state CT.

查看原文本刊更多论文

具有自发电荷转移的外延分子异质结：单晶并五苯上的新型强受体全氟四氮杂萘

准确地了解供体-受体异质结在有机光电子学领域是至关重要的。在本研究中，一种新的强受体分子全氟四氮杂环烯（F8-TANC）沉积在单晶并五苯（PnSC）上，形成了一个明确的分子异质结，并伴有供体-受体电子耦合。表面x射线衍射显示F8-TANC在PnSC表面沿独特方向外延生长。此外，光电发射结果显示，在异质结自发电荷转移（CT）的驱动下，从供体（p型）PnSC侧到受体（n型）F8-TANC侧具有向上的带状弯曲行为。本研究首次报道了一种供体-受体分子异质结，实现了明确的外延生长和基态CT。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Synthetic Metals 工程技术-材料科学：综合

CiteScore

8.30

自引率

4.50%

发文量

189

审稿时长

33 days

期刊介绍： This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.