A Vinylene‐Bridged Perylenediimide‐Based Polymeric Acceptor Enabling Efficient All‐Polymer Solar Cells Processed under Ambient Conditions

Guo, Yangyang; Li, Yun-ke; Awartani, Omar; Zhao, Jingbo; Han, Han; Ade, Harald; Zhao, Dahui; Yan, He

doi:10.1002/adma.201602387

Cited by 226 publications

(169 citation statements)

References 64 publications

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“…[9,10] Such modifications fort he PDI-based acceptors can reduce intermolecular interactions and boost the PCE of the corresponding OSCs to over 6%. [12] Choi et al synthesized three structural isomers based on cyclohexane as the sp 3 -s core, in whicht he nitrogen atoms of the PDI unit were linked to different positions of cyclohexane. How to adjusti ntramolecular twistingp lays av ital role in photovoltaic performance for PDI-based acceptors.…”

Section: Introductionmentioning

confidence: 99%

9,9′‐Bifluorenylidene‐Core Perylene Diimide Acceptors for As‐Cast Non‐Fullerene Organic Solar Cells: The Isomeric Effect on Optoelectronic Properties

Zhao

Wang

Xia

et al. 2018

Chemistry A European J

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Two different non-fullerene small-molecule acceptors, m-PIB and p-PIB, based on 9,9'-bifluorenylidene (BF) and perylene diimide (PDI) were designed and synthesized. Four β-substituted PDIs were linked to BF in different positions. Based on DFT analysis, derivative p-PIB exhibited reduced intramolecular twisting between the PDI moieties, more delocalized wave function, and sufficiently wider π-electron delocalization than that of m-PIB. The absorption ability of p-PIB was enhanced due to increased intermolecular interactions. By blending p-PIB with poly{4,8-bis[5-(2ethylhexyl)thiophen-2-yl]benzo[1,2-b:4,5-b']dithiophene-co-3-fluorothieno[3,4-b]-thiophene-2-carboxylate} (PTB7-Th), organic solar cells (OSCs) based on p-PIB obtained a maximum power conversion efficiency of 5.95 % without any treatments. Due to the improved and balanced hole and electron mobilities, the short-circuit current and fill factor of OSCs based on PTB7-Th and p-PIB were significantly increased. The AFM and TEM results revealed that the PTB7-Th:p-PIB film had favorable nanoscale phase separation and formed a bicontinuous interpenetrating network.

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Section: Introductionmentioning

confidence: 99%

9,9′‐Bifluorenylidene‐Core Perylene Diimide Acceptors for As‐Cast Non‐Fullerene Organic Solar Cells: The Isomeric Effect on Optoelectronic Properties

Zhao

Wang

Xia

et al. 2018

Chemistry A European J

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“…Among various n-type organic semiconductors developed to date,p olymers based on naphthalene diimide (NDI) [12][13][14] and perylene diimide (PDI) [15,16] show the most promising performance in all-PSCs.I ndeed, n-type polymer acceptors showing PCE > 5% are almost exclusively built on the basis of NDI and PDI moieties, [11][12][13][14][15][16][17] except for polymer acceptors based on B ! Nu nits.…”

mentioning

confidence: 99%

Effects of Bithiophene Imide Fusion on the Device Performance of Organic Thin‐Film Transistors and All‐Polymer Solar Cells

Wang,

Yan,

Guo

et al. 2017

Angew Chem Int Ed

156

106

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Two new bithiophene imide (BTI)-based n-type polymers were synthesized. f-BTI2-FT based on a fused BTI dimer showed a smaller band gap, a lower LUMO, and higher crystallinity than s-BTI2-FT containing a BTI dimer connected through a single bond. s-BTI2-FT exhibited a remarkable electron mobility of 0.82 cm V s , and f-BTI2-FT showed a further improved mobility of 1.13 cm V s in transistors. When blended with the polymer donor PTB7-Th, f-BTI2-FT-based all-polymer solar cells (all-PSCs) attained a PCE of 6.85 %, the highest value for an all-PSC not based on naphthalene (or perylene) diimide polymer acceptors. However, s-BTI2-FT all-PSCs showed nearly no photovoltaic effect. The results demonstrate that f-BTI2-FT is one of most promising n-type polymers and that ring fusion offers an effective approach for designing polymers with improved electrical properties.

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“…Indeed, many approaches have been reported to realize solar devices with better performance. Some novel materials with extraordinary electrical and optical properties including perovskite materials, 1-3 carbon materials, 4-6 and organic materials [7][8][9] have been investigated for use in highly efficient solar cells. However, the stability of perovskite solar cells is an unsolved scientic problem and the PCE of ordinary organic solar cells is unsatisfactory.…”

Section: Introductionmentioning

confidence: 99%

Multi-type quantum dots photo-induced doping enhanced graphene/semiconductor solar cell

Feng

et al. 2017

RSC Adv.

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A viable approach to enhance the photovoltaic performance of graphene (Gr)/semiconductor solar cells has been demonstrated. In order to take full advantage of the solar energy in the range of visible and ultraviolet light, InP and ZnO quantum dots (QDs) with band gaps of 2.4 eV and 3.3 eV, respectively, are simultaneously introduced to dope Gr by a photo-induced doping mechanism. Raman and photoluminescence measurements indicate that the photo-induced holes diffuse into Gr, leading to pdoping of Gr. As a result, the power conversion efficiency (PCE) of the Gr/GaAs heterostructure solar cell with good stability can be improved from 8.57% to 11.50%. Although this process is simple and feasible, we emphasize that the mixed semiconductor QDs enhanced Gr/semiconductor heterostructure solar cell is similar to the band gap engineering of traditional multi-junction bulk semiconductor solar cells.

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A Vinylene‐Bridged Perylenediimide‐Based Polymeric Acceptor Enabling Efficient All‐Polymer Solar Cells Processed under Ambient Conditions

Cited by 226 publications

References 64 publications

9,9′‐Bifluorenylidene‐Core Perylene Diimide Acceptors for As‐Cast Non‐Fullerene Organic Solar Cells: The Isomeric Effect on Optoelectronic Properties

9,9′‐Bifluorenylidene‐Core Perylene Diimide Acceptors for As‐Cast Non‐Fullerene Organic Solar Cells: The Isomeric Effect on Optoelectronic Properties

Effects of Bithiophene Imide Fusion on the Device Performance of Organic Thin‐Film Transistors and All‐Polymer Solar Cells

Multi-type quantum dots photo-induced doping enhanced graphene/semiconductor solar cell

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