Overview of high-efficiency organic photovoltaic materials and devices

Liu, Xuxu; Chen, Huajie; Tan, Songting

doi:10.1016/j.rser.2015.08.032

Cited by 75 publications

(23 citation statements)

References 124 publications

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“…The reference conjugated polymer researched nowadays in industrially escalated OSC is poly(3‐hexylthiophene) (P3HT) due to its excellent solubility and high hole mobility . There are several synthetic routes used to obtain this conjugated polymer, either for regio‐random (Zn catalyzed) or regioregular (McCullough route, which permits some molar mass control) …”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] The reference conjugated polymer researched nowadays in industrially escalated OSC is poly(3-hexylthiophene) (P3HT) due to its excellent solubility and high hole mobility. [7] There are several synthetic routes used to obtain this conjugated polymer, either for regio-random (Zn catalyzed) or regioregular (McCullough route, which permits some molar mass control). [8][9] Chen et al [10] reported the regiocontrolled synthesis of poly(3alkyl-thiophenes), where alkyl groups were butyl, hexyl, octyl, dodecyl, and tetradecyl; mediated by Rieke zinc using different catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Poly(3‐Hexylthiophene) for Organic Solar Cells

Santos

Arias

Marques

et al. 2019

Macromolecular Symposia

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Poly(3‐hexylthiophene) (P3HT) has been successfully synthesized through McCullough route. The influence of nickel catalyst content on molar mass (Mn and Mw), dispersity (Đ), regioregularity (rr), as well as optical, thermal, and morphological properties is systematically investigated. The results evidence that polymer dispersities are narrow, Mn and rr values decrease with the augmentation of catalyst content. Polymer solution in different solvents (chloroform and dichlorobenzene) show similar optical band gaps. Solid state band gap of obtained material is lower than in solution, which confirms the reorganization of polymer chains in solid state. Both polymers show good thermal stability and their morphologies are tightly influenced by the monomer/catalyst ratio in the synthesis. Two main morphologies are obtained, for the higher molar mass P3HT it is nodule‐like, while the lower Mn presented rod form. The fore polymer combined with PCMB results in lower root mean square (RMS) indicating smoother morphology, which is more appropriate for solar cells application.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Poly(3‐Hexylthiophene) for Organic Solar Cells

Santos

Arias

Marques

et al. 2019

Macromolecular Symposia

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“…Owing to the development of polymer donor and device processing, the power conversion efficiencies (PCEs) of several conjugated polymers with single junction device have reached 11% . The donor–acceptor (D‐A) copolymerization of a donor (D) unit and an acceptor (A) unit is a popular and successful strategy in reducing the bandgap of the conjugated polymers . Furthermore, the frontier molecular orbital (HOMO/LUMO) energy levels of D‐A type copolymers can be readily tuned by rational choice of D and A units.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Optoelectronic Properties of Benzo[1,2‐b:4,5‐b′]dithiophene‐Based Copolymers with Conjugated 2‐(2‐Ethylhexyl)‐3,4‐dimethoxythiophene Side Chains

Wang

Chen

Guo

et al. 2016

Macro Chemistry & Physics

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In order to regulate the electronic ability of benzo [1,2-b:4,5-b′]dithiophene (BDT), the new electron-donating unit (BDTOT) is designed and synthesized which consists of a BDT backbone with conjugated 2-(2-ethylhexyl)-3,4-dimethoxythiophene side chains. By alternating copolymerization of BDTOT with electron-accepting units of fluorinated benzothiadiazole (FBT), benzothiadiazole (BT), and pyrrolo[3,4-c]pyrrole-1,4-dione (DPP), three donor-acceptor (D-A) copolymers (PBDTOT-FBT, PBDTOT-BT, and PBDTOT-DPP) have been developed for PSC applications. The impact of dimethoxythiophene substituent and the electron-accepting strength of the acceptor units on the absorption, HOMO/LUMO energy levels, and photovoltaic properties of the resultant polymers is investigated in detail. PBDTOT-BT and PBDTOT-DPP exhibit relatively narrower bandgaps and PBDTOT-FBT possesses a down-shifted HOMO energy level as compared to their corresponding analogs without methoxy groups onto the conjugated thiophene side chains. The screening of the different blend ratio, the processing additive, and polar solvent post-treatment is conducted to optimize the polymer solar cell (PSC) devices. PSCs with PBDTOT-FBT as donor deliver a power conversion efficiency (PCE) of 2.55%. By treatment of the active layer with methanol to tailor the morphology, the solar cell based on PBDTOT-FBT exhibits the remarkably improved PCE of 4.84% with a V oc of 0.92 V, a J sc of 8.71 mA cm −2 , and an FF of 60.3%.

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“…In recent years, the study on functional thin film materials has become a hot topic [1][2][3][4], especially in the aspect of thin film photovoltaic materials [5][6]. The related preparation equipments and methods are very expensive [7][8], it is the obstacle to develop these functional film materials.…”

Section: Introductionmentioning

confidence: 99%

Design and Improvement of Devices for Preparing Film Materials

Liu

et al. 2016

MATEC Web Conf.

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Abstract. Most equipments for film material preparation are more expensive, so it is necessary to design some low cost, practical instrument or devices. This work gives three kinds of devices for preparing film matreials. One is the experimental apparatus for reducing and vulcanization, the others are a vulcanization and exhaust gas treatment apparatus, and an experimental apparatus for sulfur deposition film. The details for their principles and structures are reported.

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Overview of high-efficiency organic photovoltaic materials and devices

Cited by 75 publications

References 124 publications

Synthesis and Characterization of Poly(3‐Hexylthiophene) for Organic Solar Cells

Synthesis and Characterization of Poly(3‐Hexylthiophene) for Organic Solar Cells

Synthesis and Optoelectronic Properties of Benzo[1,2‐b:4,5‐b′]dithiophene‐Based Copolymers with Conjugated 2‐(2‐Ethylhexyl)‐3,4‐dimethoxythiophene Side Chains

Design and Improvement of Devices for Preparing Film Materials

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