Long-term thermally stable nanoconfining networks for efficient fully conjugated semicrystalline/amorphous diblock copolymer photovoltaics

Lee, Yu Ping; Liu, Ming Wei; Qin, Jia Kuan; Lee, Yi-Huan; Yang, Yi; Wang, Leeyih; Cheng, Yu‐Chieh; Chen, Yi Fan; Yu, Wen; Hsieh, Chang-Tai; Dai, Chi An

doi:10.1016/j.orgel.2019.02.016

Cited by 2 publications

(1 citation statement)

References 63 publications

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“…Among the various conjugated rod–rod BCPs, BCPs containing poly(3-alkylthiophene) (P3AT) have been mostly studied as model systems owing to their remarkable electronic activity and straightforward synthesis. By a facile Grignard metathesis (GRIM) polymerization, , a range of P3AT-based rod–rod BCPs have been prepared, which are classified into three types: thiophene–thiophene BCPs differing solely in their side alkyl chain length or topology, − thiophene–thiophene BCPs with functionalized side chains, − and BCPs consisting of various arene backbones. − In principle, the competition between microphase separation and crystallization in BCPs has a profound effect on their final morphology and resulting properties. For example, poly(3-butylthiophene)- block -poly(3-octylthiophene) (P3BT- b -P3OT), with varying side-chain lengths, self-assembled and crystallized into nanowires in solution and microphase-separated into lamellae during the melt phase .…”

Section: Introductionmentioning

confidence: 99%

Tailoring Cocrystallization and Microphase Separation in Rod–Rod Block Copolymers for Field-Effect Transistors

et al. 2021

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Conjugated rod−rod block copolymers (BCPs) are important semiconducting materials because they combine the unique microphase-separation characteristics of BCPs with the remarkable optoelectronic properties of conjugated polymers. The ability to tailor the two fundamental phase transitions (microphase separation and crystallization) in BCPs could enable efficient control over their physical and optoelectronic properties. Herein, a set of poly(3-butylthiophene)-block-poly(3-dodecylthiophene) (P3BT-b-P3DDT) BCPs with controlled block ratios are synthesized and the interplay between their microphase separation and cocrystallization is explored by tuning both the intrinsic (i.e., block ratios) and extrinsic factors (i.e., solvent and thermal annealing temperatures). An increased P3BT content, slower solvent evaporation, and higher thermal annealing temperatures favor microphase separation in P3BT-b-P3DDT. Furthermore, the relationship between various P3BT-b-P3DDT crystalline structures and their charge-transport properties is scrutinized. This work elucidates how P3BT-b-P3DDT BCPs undergo microphase separation and crystallization and how these processes can be tailored, strengthening our fundamental understanding of conjugated rod−rod BCP systems.

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Section: Introductionmentioning

confidence: 99%

Tailoring Cocrystallization and Microphase Separation in Rod–Rod Block Copolymers for Field-Effect Transistors

et al. 2021

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Composite polymer films with semiconductor nanocrystals for organic electronics and optoelectronics

Pylypova,

Korbutyak,

Tokarev

et al. 2024

SPQEO

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Organic materials and, in particular, polymer films enhanced with certain nanocrystals have a potential for wide application in electronics and optoelectronics due to their organic flexibility, lightweight, simple integration, affordable manufacturing cost, and low environmental impact of their production. The purpose of this research is to investigate the electrical properties of polymer-based composite films containing Cd1–xCuxS nanocrystals in order to determine their prospects for use as conductive layers in organic electronics and optoelectronics. The paper contains a detailed description of the synthesis method of hybrid nanocomposite films based on peroxide reactive copolymer (PRC) with Cd1–xCuxS nanocrystals. The defect structure of the films is studied by analyzing the photoluminescence spectra. Current-voltage characteristics of the films with different Cd and Cu contents in the Cd1–xCuxS nanocrystals embedded into the polymer matrix, deposited on glass substrates are measured in the dark and under light illumination. The film conductivity is found to increase with the Cu content in the Cd1–xCuxS nanocrystals. The carrier transport corresponds to the Ohm law at low voltages and the space charge limited current (SCLC) or Poole–Frenkel mechanisms at higher ones. The conductivity of the polymer-based hybrid nanocomposite films has a weak dependence on the intensity of light illumination. The explanation of the obtained experimental results is proposed.

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Long-term thermally stable nanoconfining networks for efficient fully conjugated semicrystalline/amorphous diblock copolymer photovoltaics

Cited by 2 publications

References 63 publications

Tailoring Cocrystallization and Microphase Separation in Rod–Rod Block Copolymers for Field-Effect Transistors

Tailoring Cocrystallization and Microphase Separation in Rod–Rod Block Copolymers for Field-Effect Transistors

Composite polymer films with semiconductor nanocrystals for organic electronics and optoelectronics

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