Donor-Acceptor Effect of Carbazole-Based Conjugated Polymer Electrets on Photoresponsive Flash Organic Field-Effect Transistor Memories

被引：76

作者：

Chen, Chia-Hui ^{[4
]}

Wang, Yang ^{[1
]}

Michinobu, Tsuyoshi ^{[1
]}

Chang, Shu-Wei ^{[2
]}

Chiu, Yu-Cheng ^{[2
,3
]}

Ke, Chun-Yao ^{[4
]}

Liou, Guey-Sheng ^{[3
,4
]}

机构：

[1] Tokyo Inst Technol, Dept Mat Sci & Engn, Tokyo 1528552, Japan

[2] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei 10607, Taiwan

[3] Natl Taiwan Univ, Adv Res Ctr Green Mat Sci & Technol, Taipei 10617, Taiwan

[4] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 10617, Taiwan

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 05期

关键词：

polymer electret; organic field-effect transistor memory; photoinduced recovery; donor-acceptor effect; ambipolar;

D O I：

10.1021/acsami.9b20960

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The molecular structure of polymer electrets is crucial for creating diverse functionalities of organic field-effect transistor (OFET) devices. Herein, a conceptual framework has been applied in this study to design the highly photoresponsive carbazole-based copolymer electret materials for the application of photoresponsive OFET memory. As an electret layer, two 1,8-carbazole-based copolymers were utilized; the copoly(CT) consisted of carbazole as the donor group and thiophene as the pi-spacer, whereas the copoly(CBT) was further introduced as an acceptor moiety, benzothiadiazole, for comparison. Both copolymers exhibited efficient visible-light absorption and photoluminescence quenching in the film state, indicating the formation of a considerable number of nonemissive excitons, one of the crucial factors for achieving photoinduced recovery behavior in OFET memories. Compared to copoly(CT) with the pure donor system, faster and more effective photoinduced recovery behavior was discovered in the copoly(CBT) with the conjugated donor-acceptor structure because of the coexistence of the conjugated donor and acceptor groups. Thus, the dissociation of the generated excitons facilitated the stimulating of the unique ambipolar trapping property, resulting in the high-density data storage devices with multilevel current states. In addition, the nonvolatile and durable characteristics demonstrated the feasibility in application of memory and photorecorders.

引用

页码：6144 / 6150

页数：7

共 28 条

[1]

Jeong Y.J., Yun D.-J., Noh S.H., Park C.E., Jang J., Surface modification of CdSe quantum-dot floating gates for advancing light-erasable organic field-effect transistor memories, ACS Nano, 12, pp. 7701-7709, (2018)

[2]

Jeong Y.J., Yun D.-J., Kim S.H., Jang J., Park C.E., Photoinduced Recovery of Organic Transistor Memories with Photoactive Floating-Gate Interlayers, ACS Appl. Mater. Inter., 9, pp. 11759-11769, (2017)

[3]

Chen C.H., Wang Y., Tatsumi H., Michinobu T., Chang S.W., Chiu Y.C., Liou G.S., Novel Photoinduced Recovery of OFET Memories Based on Ambipolar Polymer Electret for Photorecorder Application, Adv. Funct. Mater., 29, (2019)

[4]

Wakim S., Blouin N., Gingras E., Tao Y., Leclerc M., Poly(2,7-carbazole) Derivatives as Semiconductors for Organic Thin-Film Transistors, Macromol. Rapid Commun., 28, pp. 1798-1803, (2007)

[5]

Zhong W., Xu J., Sun S., Liang J., Zhang B., He R., Lan L., Huang F., Ying L., Yang W., Peng J., Cao Y., Effects of bridge units on the properties of indolo[3,2-b]carbazole-co-difluorobenzo[d][1,2,3]triazole based π-conjugated copolymers, Org. Electron., 23, pp. 17-27, (2015)

[6]

Onicha A.C., Panthi K., Kinstle T.H., Castellano F.N., Carbazole donor and carbazole or bithiophene bridged sensitizers for dye-sensitized solar cells, J. Photochem. Photobiol. A: Chem., 223, pp. 57-64, (2011)

[7]

Kim J., Yun M.H., Anant P., Cho S., Jacob J., Kim J.Y., Yang C., Copolymers Comprising 2,7-Carbazole and Bis-benzothiadiazole Units for Bulk-Heterojunction Solar Cells, Chem. - Eur. J., 17, pp. 14681-14688, (2011)

[8]

Li J., Wang L., Zhang Q., Wu W., He C., Zhang J., Investigation and design of high efficiency carbazole-based sensitizers for solar cells: Effect of the nature and length of π-linker, Org. Electron., 22, pp. 108-116, (2015)

[9]

Koumura N., Hara K., Development of carbazole dyes for efficient molecular photovoltaics, Heterocycles, 87, pp. 275-301, (2013)

[10]

Sudyoadsuk T., Pansay S., Morada S., Rattanawan R., Namuangruk S., Kaewin T., Jungsuttiwong S., Promarak V., Synthesis and Characterization of D-D-π-A-Type Organic Dyes Bearing Carbazole-Carbazole as a Donor Moiety (D-D) for Efficient Dye-Sensitized Solar Cells, Eur. J. Org. Chem., 2013, pp. 5051-5063, (2013)

← 1 2 3 →