Panchromatic polymer–polymer ternary solar cells enhanced by Förster resonance energy transfer and solvent vapor annealing

Goh, Taedong; Huang, Jing; Bartolome, Benjamin G.; Sfeir, Matthew Y.; Vaisman, Michelle; Lee, Minjoo Larry; Taylor, André D.

doi:10.1039/c5ta04905a

Cited by 56 publications

(44 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[44] Thus nanowires and nanorods resulting in a 3D-N can be created using a top-down approach. TPF is one of the commonly used methods to make MGN-based one-body electrodes, where the formation of MGNs is controlled under the amorphous state above the glass transition temperature (T g ) during the solidification.…”

Section: Top-down Approachmentioning

confidence: 99%

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Doubek

McMillon‐Brown

et al. 2018

Advanced Materials

Self Cite

View full text Add to dashboard Cite

transformers [2] and load bearing applications. [3] In the last few decades, the study of nanomaterials has become a central focus in nanoscience and nanotechnology. [4] In fact, many studies have shown that with reduction in size, nanomaterials display novel electrical, mechanical, chemical and optical properties, which are largely believed to be the result of surface and quantum confinement effects. [4,5] Remarkably, this trend has found traction in the metallic glass field where metallic glasses nanostructures (MGNs) demonstrate an important role in many applications such as light harvesting, [6] photovoltaic, [7] biomedical, [8] magneto-optical, [9] organic synthesis, [10] lithium-ion batteries [11] and electrocatalysis. [12] Recently, MGNs are receiving increased attention due to their distinguished performance, such as high activity and long term stability in electrocatalytic reactions. [12,13] Although several review papers have already covered the topic of nanopatterning of bulk metallic glasses (BMGs), [14][15][16] the correlation between recent synthetic methods and electrocatalytic applications for MGNs has not been thoroughly addressed. Moreover, there is currently no review that unites MGNs synthesized from different approaches (top-down and bottom-up) with conventional electrochemical reactions. Therefore, in this review our mission is to: 1) present a focused perspective on the latest fabrication techniques of MGNs toward the pursuit of novel electrocatalysts and electrodes; 2) highlight recent advances in computational screening and predictions that could be applied toward new metallic glass electrocatalyst discovery; and 3) report distinct advancements in electrocatalytic applications related to MGNs by creating a comprehensive discussion for commonly employed kinetic parameters and their connection with the unique material structure. Finally, as the first progress report on the metallic glass based electrocatalysts, we will also highlight some of the challenges that need to be addressed toward future progress in this field.BMGs are those metallic glasses (MGs) that can be made in 'bulk' scale with good glass forming abilities, [17] representing a versatile platform for many applications. To date, a wide range of BMG-forming alloys have been developed, including Zr-, [18] Fe-, [19] Cu-, [20] Ni-, [21] Ti-, [22] Mg-, [23] Pd-, [24] Au-, [25] and Pt-based compositions. [26] Moreover, the increased disorder brought by the higher degree of multinary systems is believed to contribute to improving the glass formation. [27] The evolution to multicomponent alloys of the most recent MG studies has also made them natural candidates for catalysis. The amorphous multinary Recent advances in metallic glass nanostructures (MGNs) are reported, covering a wide array of synthesis strategies, computational discovery, and design solutions that provide insight into distinct electrocatalytic applications. A brief introduction to the development and unique features of MGNs with an overview of top-down and bottom-up sy...

show abstract

Section: Top-down Approachmentioning

confidence: 99%

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Doubek

McMillon‐Brown

et al. 2018

Advanced Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Previous examples of controlling the morphology have been demonstrated including thermal annealing, solvent annealing, in‐situ annealing, solvent selection, post additive soaking, and solvent additives . Among them, the solvent additives approach has attracted significant attention as a convenient and time‐saving methodology .…”

Section: Introductionmentioning

confidence: 99%

Binary Solvent Additives Treatment Boosts the Efficiency of PTB7:PCBM Polymer Solar Cells to Over 9.5%

et al. 2018

Self Cite

View full text Add to dashboard Cite

In this work, a 9.5% of power conversion efficiency (PCE) is obtained in the thieno [3,4‐b] thiophene/benzodithiophene (PTB7): (6,6)‐phenyl‐C70‐butyric acid methyl ester (PC70BM) based polymer solar cell (PSC) by using a novel binary solvent additive of diphenyl ether (DPE): 1,8‐diiodoctane (DIO). We find that this binary solvent additive approach increases the PTB7 donor crystallinity using DPE and enhances the PC70BM dispersion using DIO. This amended aggregation results in a better donor/acceptor phase separation. We show that the improved crystallization and face‐on orientation preference of PTB7 contributes to higher light absorption and charge transport efficiency in the active layer. Moreover, a better D/A phase separation provides more efficient charge extraction and suppresses the charge recombination, leading to an improved FF >70%.

show abstract

“…8,9 These ternary blends exhibit charge transfer 5 or energy transfer. 6,10,11 It has been shown that the F€ orster Resonance Energy Transfer (FRET) effect on polymer-polymer poly [4,8- [3,4-b]thiophenediyl] (PTB7); poly [9-(1-octylnonyl)-9H-carbazole-2,7-diyl]-2,5-thiophenediyl-2,1,3-benzothiadiazole-4,7-diyl-2,5-thiophenediyl] (PCDTBT) and [6,6]-phenyl C 71 butyric acid methyl ester (PC 71 BM) ternary blend system boosts the efficiency of conventional BHJ-PSCs. 6 Further, dual donor and multidonor systems show improved PCE in excess of 9% due to energy transfer and efficient charge transport.…”

Section: à3mentioning

confidence: 99%

Improved hole mobility and suppressed trap density in polymer-polymer dual donor based highly efficient organic solar cells

Bharti

Sharma

Gupta

et al. 2016

Applied Physics Letters

View full text Add to dashboard Cite

Here we report, the charge transport properties of polymer-polymer dual donor blended film, viz., polythieno[3,4-b]-thiophene-co-benzodithiophene (PTB7) and poly [N-9″-hepta-decanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′benzothiadiazole) (PCDTBT) in the optimized concentration. Trap density and hole mobility in polymer-polymer (PTB7-PCDTBT) dual donor system have been studied by means of current density–voltage (J-V) characteristics at various temperatures, i.e., 280 K–120 K in hole only device configuration, i.e., indium tin oxide/poly(3,4-ethylenedioxythiophene):poly(styrenesulphonate) (PEDOT:PSS)/Polymer film/gold (Au). The J-V curves exhibit the space charge limited conduction behavior. The corresponding hole mobility for PTB7 and PCDTBT are 3.9 × 10−4 cm2 V−1 s−1 and 2.1 × 10−4 cm2 V−1 s−1, respectively, whereas it is 9.1 × 10−4 cm2 V−1 s−1 in the polymer-polymer blend of PTB7:PCDTBT (0.7:0.3). This enhancement in mobility can be attributed to the suppressed trap density in PTB7:PCDTBT (0.7:0.3) of 7.4 × 1016 cm−3, as compared to the trap density of 1.1 × 1017 cm−3 for PTB7 and 1.6 × 1017 cm−3 for PCDTBT. Atomic force microscopy shows an improvement in the morphology of the blend. The J–V characteristic at various light intensities in the bulk heterojunction (BHJ) solar cell reveals that the blending of PCDTBT in PTB7 suppressed the trap-assisted recombination. The corresponding power conversion efficiencies for PTB7:PC71BM, PCDTBT:PC71BM and PTB7:PCDTBT:PC71BM BHJ solar cells are 6.9%, 6.1% and 9.0%, respectively. This work unravels that the enhanced mobility and suppressed trap density play a significant role in the improvement of efficiency in dual donor based organic solar cells.

show abstract

Panchromatic polymer–polymer ternary solar cells enhanced by Förster resonance energy transfer and solvent vapor annealing

Cited by 56 publications

References 70 publications

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Binary Solvent Additives Treatment Boosts the Efficiency of PTB7:PCBM Polymer Solar Cells to Over 9.5%

Improved hole mobility and suppressed trap density in polymer-polymer dual donor based highly efficient organic solar cells

Contact Info

Product

Resources

About