8.91% Power Conversion Efficiency for Polymer Tandem Solar Cells

Yusoff, Abd. Rashid bin Mohd; Lee, Seung Joo; Kim, Hyeong Pil; Shneider, Fabio Kurt; Silva, Wilson José da; Jang, Jin

doi:10.1002/adfm.201303471

Cited by 48 publications

(28 citation statements)

References 36 publications

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“…PBDTTT polymers have been widely selected as the photoactive materials in double junction OPVs owing to the advantage of excellent EQE values (>70%) in the whole wavelength region. [80][81][82][83][84][85][86] Zhou et al [ 80 ] fi rst explored the PBDTTT-C/PCBM blend as red absorber and designed a double junction OPV with a polymer inter-connect layer. The best-performing device achieved a V oc of 1.50 V, a J sc of 7.7 mA cm −2 , and a large FF of 72%, yielding a PCE of 8.2%.…”

Section: Multiple Junction Opvs Based On Well-known Pbdttt Polymersmentioning

confidence: 99%

Breaking the 10% Efficiency Barrier in Organic Photovoltaics: Morphology and Device Optimization of Well‐Known PBDTTT Polymers

Zhang

Hou

2016

Advanced Energy Materials

292

213

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Section: Multiple Junction Opvs Based On Well-known Pbdttt Polymersmentioning

confidence: 99%

Breaking the 10% Efficiency Barrier in Organic Photovoltaics: Morphology and Device Optimization of Well‐Known PBDTTT Polymers

Zhang

Hou

2016

Advanced Energy Materials

292

213

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“…Previously, we demonstrated the realization of all-solution-processed all-plastic singlejunction solar cells using layers of the conducting polymer poly (3,4- [34][35][36][37] Despite these advances, the realization of all-solution-processed all-plastic tandem solar cells is still challenging. This is because the PEDOT:PSS/PEI CRL used in those tandem cells required to be patterned (due to the high conductivity) in order to avoid shorts or large leakage between the CRL and the electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…This is because the PEDOT:PSS/PEI CRL used in those tandem cells required to be patterned (due to the high conductivity) in order to avoid shorts or large leakage between the CRL and the electrodes. 26,36,[38][39][40][41][42] For instance, Gupta et al 41 reported that their tandem solar cells exhibited electrical shorts between two PEDOT:PSS layers because of its lateral conductivity. Similar challenges have also been reported in recent papers.…”

Section: Introductionmentioning

confidence: 99%

Flexible all-solution-processed all-plastic multijunction solar cells for powering electronic devices

et al. 2016

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We demonstrate the first all-plastic multijunction solar cells that all layers are solution processed sequentially from organic synthetic inks, including the electrodes, charge-collecting layers, the active layers, and the charge-recombination layers connecting the multiple junctions. Additionally, to our knowledge, this is the first reported organic tandem solar cells can simultaneously have the advantages of vacuum-free, metal-free, highly flexible and high output voltage. The realization of the all-plastic multijunction solar cells is based on fine tuning of the conductivity of the charge-recombination layer (CRL) via modifying the PEDOT:PSS formulation and selecting the processing solvent of the polyethylenimine to avoid the patterning and shorts. These cells with high photovoltage have been shown to meet the requirements to power liquid-crystal displays, full-color light-emitting diodes under low-intensity light conditions. They could become very low-cost solutions for powering various portable and wearable electronic devices, including wireless sensors for the internet of things applications.Flexible all-plastic multijunction solar cells with high photovoltage have been demonstrated via optimizing the charge-recombination layer and shown to power portable electronics. AbstractLow-cost, light-weight and flexible power supply is highly desirable for portable electronic devices. All-plastic solar cells in which all layers are fabricated sequentially from organic synthetic inks could meet these requirements. Here, we report that fully solutionprocessed all-plastic multijunction solar cells can be easily fabricated layer by layer without the need of sophisticated patterning. The key for the high-yield fully solution-processed multijunction cells is the control and tuning of the conductivity of the charge-recombination layer of PEDOT:PSS/PEI. The all-plastic multijunction solar cells achieve PCE of 6.1±0.4%and a high open-circuit voltage of 5.37 V. These all-plastic multijunction solar cells are successfully used to drive liquid-crystal displays, full-color light-emitting diodes and for water splitting under different light illumination conditions.

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“…Previously we have demonstrated polyethylenimine (PEI) is able to substantially reduce the work function of conductors such as metals, metal oxides, conducting polymers and graphene. 6 Later on it has been widely used to produce low-work function electrodes for semiconducting optoelectronics devices, such as organic (or perovsikte) solar cells, [7][8][9][10][11][12][13][14] organic (or inorganic) light emitting diodes, [15][16][17][18][19][20] organic photodetectors, [21][22] and organic (or inorganic) field effect transistors. [23][24][25][26][27] Generally, 2-methoxyethanol (MEA) has been used as the solvent to process the PEI and the modification layer is typically prepared by spin coating method.…”

Section: Introductionmentioning

confidence: 99%

Polyethylenimine Aqueous Solution: A Low-Cost and Environmentally Friendly Formulation to Produce Low-Work-Function Electrodes for Efficient Easy-to-Fabricate Organic Solar Cells

Xue

Jiang

Qin

et al. 2014

ACS Appl. Mater. Interfaces

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Polyethylenimine (PEI) has been widely used to produce low-work-function electrodes. Generally, PEI modification is prepared by spin coating from 2-methoxyethanol solution. In this work, we explore the method for PEI modification on indium tin oxide (ITO) by dipping the ITO sample into PEI aqueous solution for organic solar cells. The PEI prepared in this method could reduce the work function of ITO as effectively as PEI prepared by spin coating from 2-methoxyethanol solution. H2O as the processing solvent is more environmentally friendly and much cheaper compared to the 2-methoxyethanol solvent. The dipping method is also compatible with large-area samples. With low-work-function ITO treated by the dipping method, solar cells with a simple structure of glass/ITO/PEI(dipping)/P3HT:ICBA/PEDOT:PSS(vacuum-free processing) display a high open-circuit voltage of 0.86 ± 0.01, a high fill factor of 66 ± 2%, and power conversion efficiency of 4.4 ± 0.3% under 100 mW/cm(2) illumination.

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8.91% Power Conversion Efficiency for Polymer Tandem Solar Cells

Cited by 48 publications

References 36 publications

Breaking the 10% Efficiency Barrier in Organic Photovoltaics: Morphology and Device Optimization of Well‐Known PBDTTT Polymers

Breaking the 10% Efficiency Barrier in Organic Photovoltaics: Morphology and Device Optimization of Well‐Known PBDTTT Polymers

Flexible all-solution-processed all-plastic multijunction solar cells for powering electronic devices

Polyethylenimine Aqueous Solution: A Low-Cost and Environmentally Friendly Formulation to Produce Low-Work-Function Electrodes for Efficient Easy-to-Fabricate Organic Solar Cells

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