Phenothiazine-Based Donor-Acceptor Polymers as Multifunctional Materials for Charge Storage and Solar Energy Conversion

被引：10

作者：

Wessling, Robin ^{[1
,2
,3
,7
]}

Andres, Rodrigo Delgado ^{[1
,2
]}

Morhenn, Isabel ^{[3
]}

Acker, Pascal ^{[3
]}

Maftuhin, Wafa ^{[4
]}

Walter, Michael ^{[2
,4
,5
]}

Wuerfel, Uli ^{[1
,2
,6
]}

Esser, Birgit ^{[1
,2
,3
,7
]}

机构：

[1] Univ Freiburg, Freiburg Mat Res Ctr FMF, Stefan Meier Str 21, D-79104 Freiburg, Germany

[2] Univ Freiburg, FIT Freiburg Ctr Interact Mat & Bioinspired Techn, Cluster Excellence LivMatS, Georges Kohler Allee 105, D-79110 Freiburg, Germany

[3] Univ Freiburg, Inst Organ Chem, Albertstr 21, D-79104 Freiburg, Germany

[4] Univ Freiburg, Freiburg Ctr Interact Mat & Bioinspired Technol, Georges Kohler Allee 105, D-79110 Freiburg, Germany

[5] Fraunhofer IWM, MikroTribol Ctr TC, Wohlerstr 11, D-79108 Freiburg, Germany

[6] Fraunhofer Inst Solar Energy Syst ISE, Heidenhofstr 2, D-79110 Freiburg, Germany

[7] Ulm Univ, Inst Organ Chem & Adv Mat 2, Albert Einstein Allee 11, D-89081 Ulm, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2024年 / 45卷 / 01期

关键词：

organic batteries; organic solar cells; donor-acceptor polymers; redox polymers; phenothiazine; level alignment; rotation potentials; PHOTOVOLTAIC PROPERTIES; CATHODE MATERIAL; REDOX POLYMERS; SMALL-MOLECULE; CELLS; GAP; POLY(VINYLPHENOTHIAZINE); BATTERIES; MECHANISM;

D O I：

10.1002/marc.202200699

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The increasing energy demand for diverse applications requires new types of devices and materials. Multifunctional materials that can fulfill different roles are of high interest as they can allow fabricating devices that can both convert and store energy. Herein, organic donor-acceptor redox polymers that can function as charge storage materials in batteries and as donor materials in bulk heterojunction (BHJ) photovoltaic devices are investigated. Based on its reversible redox chemistry, phenothiazine is used as the main building block in the conjugated copolymer design and combined with diketopyrrolopyrrol and benzothiadiazole as electron-poor comonomers to shift the optical absorption into the visible region. The resulting polymers show excellent cycling stability as positive electrode materials in lithium-organic batteries at discharge potentials of 3.6-3.7 V versus Li/Li+ as well as good performances in BHJ solar cells with up to 1.9% power conversion efficiency. This study shows that the design of such multifunctional materials is possible, however, that it also faces challenges, as essential properties for good device function can lead to diametrically opposite requirements in materials design.

引用

页数：9