Application of indacenodiselenophene central core and modulation of terminal group interaction for high-efficient P3HT-based organic solar cells

Du, Mengzhen; Xiao, Yuzhang; Geng, Yanfang; Chen, You; Jiang, Hai; Dong, Chuanqi; Guo, Qiang; Guo, Qing; Li, Gongqiang; Zhou, Erjun

doi:10.1039/d2tc01855a

Cited by 5 publications

(5 citation statements)

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“…From the mentioned equation, it is clear that V OC , J sc , and FF directly affect the PCE of OSC materials: by increasing the values of these parameters PCE will also be increased. 79 On the other hand, power of incident light is inversely related to PCE. By knowing the numerical values of these parameters, we can judge effectively the value for PCE.…”

Section: Resultsmentioning

confidence: 99%

“…J sc (short circuit current), V OC , power of incident light and FF contribute collectively to impart a positive effect on the PCE of NFA-based OSCs as represented by eqn (10): 77,78 PCE ¼ J sc V OC FF P in (10) From the mentioned equation, it is clear that V OC , J sc , and FF directly affect the PCE of OSC materials: by increasing the values of these parameters PCE will also be increased. 79 On the other hand, power of incident light is inversely related to PCE. By knowing the numerical values of these parameters, we can judge effectively the value for PCE.…”

Section: Fill Factor (Ff)mentioning

confidence: 99%

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Novel A-π-D-π-A type non-fullerene acceptors of dithienyl diketopyrropopyrrole derivatives to enhance organic photovoltaic applications: a DFT study

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Section: Fill Factor (Ff)mentioning

confidence: 99%

Novel A-π-D-π-A type non-fullerene acceptors of dithienyl diketopyrropopyrrole derivatives to enhance organic photovoltaic applications: a DFT study

et al. 2023

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“…It is evident that simultaneously achieving high and balanced V OC and J SC values is crucial for attaining an excellent performance in P3HT-based OPVs. These results suggest that it is possible to achieve high performance through side-chain engineering of the small molecule acceptors’ core units; Figure c reveals the plot of J SC and V OC for P3HT-based OPV devices based on the reported results. ,,,− …”

Section: Resultsmentioning

confidence: 99%

High-Performance Poly(3-hexyl thiophene)-Based Organic Photovoltaics with Side-Chain Engineering of Core Units of Small Molecule Acceptors

Chang,

Chen,

Hsueh

et al. 2023

ACS Appl. Mater. Interfaces

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In this study, we synthesized a series of four large-band gap small molecule acceptors with side-chain engineering of the dithieno-pyrrolo-fused pentacyclic benzotriazole (BZTTP or Y1 core) or the fused-ring dithienothiophene-pyrrolobenzothiadiazole (TPBT or Y6 core) with difluoro-indene-dione (IO2F) or dichloro-indene-dione (IO2Cl) end groups to form Y1-IO2F, Y1-IO2Cl, Y6-IO2F, and Y6-IO2Cl acceptors, respectively, for blending with poly(3-hexyl thiophene) (P3HT) for bulk heterojunction organic photovoltaics. The complementary UV–vis absorption spectra of these small molecules and P3HT along with their offset energy bands allow broad absorption and effective electron transfer. Through synchrotron wide-angle X-ray scattering (WAXS) analyses and contact angle measurements, we found that the blend of the small molecule Y6-IO2F (having a TPBT core) and P3HT achieves an optimum morphology that balances their crystallinity and miscibility, among those of these four blends, leading to a substantial enhancement in the short-circuit current density and thus power conversion efficiency (PCE) in their devices. For example, the P3HT:Y6-IO2F (w/w: 1/1.2) device exhibited a champion PCE of 10.5% with a short current density (J sc) value of 15.9 mA/cm2 as compared to the P3HT:Y1-IO2F device having a PCE of 2.2% with a J sc value of 5.7 mA/cm2 because of the higher Y6-IO2F (with TPBT core) molecular packing that facilitated carrier transport in the devices. The enhanced thermal stability exhibited by the devices incorporating Y6-IO2F and Y6-IO2Cl, as compared to that of Y1-IO2F and Y1-IO2Cl devices, is also due to the more planar TPBT core structure, while the photostability of devices incorporating Y6-IO2Cl and Y1-IO2Cl is better than that of devices incorporating Y6-IO2F and Y1-IO2F, owing to more photostable chemical structures. These results present an outstanding performance for P3HT-based organic solar cells. Moreover, these small molecule blends are processed with an environmentally friendly solvent tetrahydrofuran, demonstrating both the sustainability and commercial viability of these types of organic photovoltaics.

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“…[1,2] Historically P3HT played an important role in OPV research, due to its simple and cheap synthesis and its high stability, making it still an DOI: 10.1002/aenm.202304455 attractive material. [3][4][5][6][7][8][9][10][11] However, in recent years it received less attention due to inherently low OPV efficiencies with most Y-series NFAs. [10,12,13] One reason is the lower open circuit voltage (V oc ) compared to, e.g., PM6 due to the higher HOMO of P3HT [12,14,15] and the higher energetic disorder of the Y-series NFA in P3HT than in, e.g., PM6, [16,17] but the detrimental problem is the high miscibility between P3HT and Y-series NFAs, which prevents the necessary phase separation for charge separation and transport.…”

Section: Introductionmentioning

confidence: 99%

Tackling P3HT:Y‐Series Miscibility Through Advanced Processing for Tunable Aggregation

Eller,

McNeill,

Herzig

2024

Advanced Energy Materials

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Polymer and small molecule blend thin films are of strong interest for organic electronics and particularly organic solar cells. The high miscibility in blends of ordinary P3HT and state‐of‐the‐art Y‐series non‐fullerene acceptors (NFAs) suppresses phase separation and aggregation challenging successful charge separation and transport. In this recent work, current‐induced doping (CID) is introduced, a method to precisely control the aggregation of Poly(3‐hexylthiophene) (P3HT) grazing incidence wide angle X‐ray scattering in solution. The highly ordered pre‐aggregation in solution is used here to control the P3HT aggregation in neat films and blends with Y12 (BTP‐4F‐12). This results in a 25‐fold increase in hole mobility in P3HT organic field‐effect transistor (OFET) devices and tunability of the P3HT aggregate quality in the presence of Y12 over large ranges. At the same time, particularly the Y12 long‐range ordering is heavily suppressed by increasing P3HT aggregation. However, solvent vapor annealing (SVA) leads to an extraordinarily high Y12 ordering, changes in the crystal orientation of Y12, and a further improvement of P3HT aggregation. A broad range of different degrees of aggregation of both materials can therefore be obtained in the final thin films solely by changing processing parameters without changing the composition of the material system.

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Application of indacenodiselenophene central core and modulation of terminal group interaction for high-efficient P3HT-based organic solar cells

Abstract: As one of the cheapest photovoltaic polymers, poly(3-hexylthiophene) (P3HT) has been considered as one of the prospective donor materials for commercial application. Thus, various non-fullerene acceptors (NFAs), especially A2-A1-D-A1-A2 type...

Cited by 5 publications

References 50 publications

Novel A-π-D-π-A type non-fullerene acceptors of dithienyl diketopyrropopyrrole derivatives to enhance organic photovoltaic applications: a DFT study

Novel A-π-D-π-A type non-fullerene acceptors of dithienyl diketopyrropopyrrole derivatives to enhance organic photovoltaic applications: a DFT study

High-Performance Poly(3-hexyl thiophene)-Based Organic Photovoltaics with Side-Chain Engineering of Core Units of Small Molecule Acceptors

Tackling P3HT:Y‐Series Miscibility Through Advanced Processing for Tunable Aggregation

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