High-performance ternary blend all-polymer solar cells with complementary absorption bands from visible to near-infrared wavelengths

Benten, Hiroaki; Nishida, Takaya; Mori, Daisuke; Xu, Huajun; Ohkita, Hideo; Ito, Shinzaburo

doi:10.1039/c5ee03460d

Cited by 155 publications

(123 citation statements)

References 50 publications

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“…Only very recently has the performance of all-polymer solar cells begun to approach that of polymer-fullerene blends, with the use of the poly [4,8- polymer and N2200 as acceptor polymer. [11,26,27] ] dithiophene) were used to make BHJ solar cells with a high PCE of 11% [2] .…”

mentioning

confidence: 99%

Comparison of the Morphology Development of Polymer–Fullerene and Polymer–Polymer Solar Cells during Solution‐Shearing Blade Coating

Yan

Kurosawa

et al. 2016

Advanced Energy Materials

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In this work, the detailed morphology studies of polymer poly(3‐hexylthiophene‐2,5‐diyl) (P3HT):fullerene(PCBM) and polymer(P3HT):polymer naphthalene diimide thiophene (PNDIT) solar cell are presented to understand the challenge for getting high performance all‐polymer solar cells. The in situ X‐ray scattering and optical interferometry and ex situ hard and soft X‐ray scattering and imaging techniques are used to characterize the bulk heterojunction (BHJ) ink during drying and in dried state. The crystallization of P3HT polymers in P3HT:PCBM bulk heterojunction shows very different behavior compared to that of P3HT:PNDIT BHJ due to different mobilities of P3HT in the donor:acceptor glass. Supplemented by the ex situ grazing incidence X‐ray diffraction and soft X‐ray scattering, PNDIT has a lower tendency to form a mixed phase with P3HT than PCBM, which may be the key to inhibit the donor polymer crystallization process, thus creating preferred small phase separation between the donor and acceptor polymer.

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mentioning

confidence: 99%

Comparison of the Morphology Development of Polymer–Fullerene and Polymer–Polymer Solar Cells during Solution‐Shearing Blade Coating

Yan

Kurosawa

et al. 2016

Advanced Energy Materials

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“…From the differences between J sc and saturated photocurrent (J sat ) under bias of −2 V, we can look into the nongeminate recombination of free charges. [23,39] A slow saturation of the photocurrent is observed under bias voltage in each device ( Figure S13, Supporting Information). As summarized in Table 3, the J sat at bias of −2 V are close to the measured J sc (12.9 vs 11.6 mA cm −2 for PBDTS-TPD all-PSC, 12.3 vs 11.2 mA cm −2 for PBDT-TPD all-PSC), which indicates that the intrinsic driving force is high enough to sweep out most of the free charges to the electrodes and the nongeminate recombination is not significant at the short-circuit condition in these all-PSCs.…”

Section: Geminate and Nongeminate Recombinationmentioning

confidence: 99%

“…[15][16][17][18][19][20][21] However, the PCEs of the record all-PSCs are still behind those of the state-of-the-art PC 71 BM-based PSCs. [22][23][24][25][26] Among the high-performance all-PSCs to date, a relatively high short-circuit current density (J sc ) of 18.6 mA cm −2 , [27] or a high fill factor (FF) over 0.7 are achieved individually, [24,26,28] approaching to those of the record-efficiency PC 71 BM-based PSCs. Despite these promising results, V oc is thought to be one of the prominent factors that limits the performance of all-PSCs.…”

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confidence: 99%

8.0% Efficient All‐Polymer Solar Cells with High Photovoltage of 1.1 V and Internal Quantum Efficiency near Unity

Zhang

et al. 2017

Advanced Energy Materials

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In very recent years, growing efforts have been devoted to the development of all‐polymer solar cells (all‐PSCs). One of the advantages of all‐PSCs over the fullerene‐based PSCs is the versatile design of both donor and acceptor polymers which allows the optimization of energy levels to maximize the open‐circuit voltage (Voc). However, there is no successful example of all‐PSCs with both high Voc over 1 V and high power conversion efficiency (PCE) up to 8% reported so far. In this work, a combination of a donor polymer poly[4,8‐bis(5‐(2‐octylthio)thiophen‐2‐yl)benzo[1,2‐b:4,5‐b′]dithiophene‐2,6‐diyl‐alt‐(5‐(2‐ethylhexyl)‐4H‐thieno[3,4‐c]pyrrole‐4,6(5H)‐dione)‐1,3‐diyl] (PBDTS‐TPD) with a low‐lying highest occupied molecular orbital level and an acceptor polymer poly[[N,N′‐bis(2‐octyldodecyl)‐naphthalene‐1,4,5,8‐bis(dicarboximide)‐2,6‐diyl]‐alt‐thiophene‐2,5‐diyl] (PNDI‐T) with a high‐lying lowest unoccupied molecular orbital level is used, realizing high‐performance all‐PSCs with simultaneously high Voc of 1.1 V and high PCE of 8.0%, and surpassing the performance of the corresponding PC71BM‐based PSCs. The PBDTS‐TPD:PNDI‐T all‐PSCs achieve a maximum internal quantum efficiency of 95% at 450 nm, which reveals that almost all the absorbed photons can be converted into free charges and collected by electrodes. This work demonstrates the advantages of all‐PSCs by incorporating proper donor and acceptor polymers to boost both Voc and PCEs.

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“…Benten et al [45] reported high-performance ternary blend all-polymer solar cells with complementary absorption bands from visible to near-infrared wavelengths. By introducing poly[N-9'-heptadecanyl-2,7-carbazole-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] (PCDTBT) as a second donor into the highly efficient low-bandgap PBDTTT-EF-T (also called as PTB7-Th)/ poly{[N,N'-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5'-(2,2'-bithiophene)} (N2200) blend, they found that PCDTBT can contribute to efficient photocurrent generation in the ternary blends.…”

Section: Two Donors and One Acceptor (D 1 -D 2 -A) Systemmentioning

confidence: 99%

Perspective of a new trend in organic photovoltaic: ternary blend polymer solar cells

2016

Sci. China Mater.

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In the past few years, ternary polymer solar cells (PSCs) have emerged as a promising structure to simultaneously improve all solar cell parameters compared with traditional binary PSCs. The third component in ternary PSCs can play versatile functions to enhance the device performance. In this review, we summarize the design rules for fabricating high-performance ternary PSCs and introduce the recent progress in this field. In addition, the characterization methods for determining the role of the third component played in ternary PSCs are described.

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High-performance ternary blend all-polymer solar cells with complementary absorption bands from visible to near-infrared wavelengths

Abstract: Ternary blend all-polymer solar cells open a new avenue for accelerating improvement in the efficiency of non-fullerene thin-film organic photovoltaics.

Cited by 155 publications

References 50 publications

Comparison of the Morphology Development of Polymer–Fullerene and Polymer–Polymer Solar Cells during Solution‐Shearing Blade Coating

Comparison of the Morphology Development of Polymer–Fullerene and Polymer–Polymer Solar Cells during Solution‐Shearing Blade Coating

8.0% Efficient All‐Polymer Solar Cells with High Photovoltage of 1.1 V and Internal Quantum Efficiency near Unity

Perspective of a new trend in organic photovoltaic: ternary blend polymer solar cells

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