Polymer solar cells based on copolymers of dithieno[3,2-b:2′,3′-d]silole and thienopyrroledione

Hong, Young-Rae; Wong, Hoi-Ka; Moh, Lionel C. H.; Tan, Huei-Shuan; Chen, Zhi-Kuan

doi:10.1039/c1cc10928f

Cited by 50 publications

(19 citation statements)

References 30 publications

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“…Since, the electron-withdrawing ability of CT is not enough to achieve a low band gap due to only one carbonyl group, thieno [3,4-c]pyrrole-4,6-dione (TPD) was applied as the electron-accepting unit to copolymerize with DTP [26]. The electrondeficient TPD moiety exhibits a symmetric, rigidly fused, coplanar structure, and strong electron-withdrawing properties due to the imide group and it maintains a symmetrical structure after the attachment of a solubilizing side chain, which make it a potential system for increasing intramolecular and intermolecular D-A interactions, reducing optical band gaps, and lowering HOMO energy levels when incorporated into polymeric backbones [27][28][29].…”

Section: Pyrrole (Dtp)-based D-a Copolymersmentioning

confidence: 99%

Design and synthesis of carbonyl group modified conjugated polymers for photovoltaic application

Shi

et al. 2011

Polym. Bull.

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In this article, a simple and common electron-withdrawing moiety, carbonyl group, is applied in the molecular design of conjugated polymers for highperformance polymer solar cells (PSCs). Two series of donor-acceptor (D-A) copolymers are synthesized through alternating copolymerization of the electrondonating (D) benzodithiophene and dithienopyrrole with various electron-accepting (A) units containing carbonyl groups. The absorption range and the band gap of copolymers can be tuned by changing the molecular structure of A unit and the number of carbonyl groups. Moreover, by introducing the carbonyl group, the highest occupied molecular orbital energy level of the copolymer is lowered efficiently, leading to the improvement of the open-circuit voltage (V OC ) of PSCs. The best photovoltaic performance is obtained while poly(benzodithiophene-alt-thiophene-3-carboxylate) is functioned as the electron donor and [6,6]-phenyl-C 61 -butyric acid methyl ester as electron acceptor in a bulk heterojunction solar cell with a power conversion efficiency of 4.13%, a V OC of 0.80 V, a short-circuit current of 8.19 mA/cm 2 , and a fill factor of 63.2%.

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Section: Pyrrole (Dtp)-based D-a Copolymersmentioning

confidence: 99%

Design and synthesis of carbonyl group modified conjugated polymers for photovoltaic application

Shi

et al. 2011

Polym. Bull.

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“…The electroluminescence peaks of MOC-1 and MOC-16 were located at 564 and 567 nm, respectively, while their maximum current efficiencies were 4.5 and 0.61 cd/A, respectively. Previous reports of TPD derivatives are mainly for the manufacturing of organic photovoltaic devices (OPVs) [ 39 , 40 , 41 , 42 ] and not as EML for OLEDs devices. These TPD derivatives have also interesting properties such as a quick and easy synthesis, high solubility in common organic solvents and the ability to form excellent films by depositing them through solution process.…”

Section: Introductionmentioning

confidence: 99%

Efficient OLEDs Fabricated by Solution Process Based on Carbazole and Thienopyrrolediones Derivatives

et al. 2018

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Four low molecular weight compounds—three of them new, two of them with carbazole (Cz) as functional group and the other two with thienopyrroledione (TPD) group—were used as emitting materials in organic light emitting diodes (OLEDs). Devices were fabricated with the configuration ITO/PEDOT:PSS/emitting material/LiF/Al. The hole injector layer (HIL) and the emitting sheet were deposited by spin coating; LiF and Al were thermally evaporated. OLEDs based on carbazole derivatives show luminances up to 4130 cd/m2, large current efficiencies about 20 cd/A and, cautiously, a very impressive External Quantum Efficiency (EQE) up to 9.5%, with electroluminescence peaks located around 490 nm (greenish blue region). Whereas, devices manufactured with TPD derivatives, present luminance up to 1729 cd/m2, current efficiencies about 4.5 cd/A and EQE of 1.5%. These results are very competitive regarding previous reported materials/devices.

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“…Further development of a vast library of electroluminescent materials, [12]- [26] development of appropriate cathode and anode materials, and [27]- [31] transport layers, [6], [32]- [37] have been instrumental in the development of phosphorescent OLEDs [38], [39] and understanding of exciton spin states. [40]- [44] The development of printing processes, [1], [45]- [50], understanding of degradation mechanisms, [33], [51] use of encapsulation, [52], ultra-bright OLEDs for lighting sources, [25] use of flexible substrates, [53] advanced light extraction techniques, [54]- [58], development of white OLEDs, [59]- [61] etc. have laid the foundation of development of potential commercialization.…”

Section: Introductionmentioning

confidence: 99%

Printable Displays and Light Sources for Sensor Applications: A Review

et al. 2015

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Printed light sources, imaging systems and displays have revolutionized modern lifestyle by enriching visual feedback of various devices that human beings interact with. Despite the overall vastness of the field, there have been few to no attempts to place recent progress in these systems in sensor systems. In this short topical review, we survey the current state of art in printed light sources, imaging systems and displays specifically geared towards sensor applications. We find that the definition of displays needs to generalized in light of the availability of disposable colorimetric sensors for various chemical and biological markers. Recent exemplars of progress in each identified area are briefly presented and in conclusion, an overall view of the trends represented by these achievements is discussed.

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Polymer solar cells based on copolymers of dithieno[3,2-b:2′,3′-d]silole and thienopyrroledione

Cited by 50 publications

References 30 publications

Design and synthesis of carbonyl group modified conjugated polymers for photovoltaic application

Design and synthesis of carbonyl group modified conjugated polymers for photovoltaic application

Efficient OLEDs Fabricated by Solution Process Based on Carbazole and Thienopyrrolediones Derivatives

Printable Displays and Light Sources for Sensor Applications: A Review

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