Enhanced photovoltaic performance of PDPP3T bulk heterojunction using D-sorbitol doped PEDOT:PSS

Zheng, Yuanyuan; Yu, Junsheng; Tang, Jie; Fu, Yang; Wang, Chao; Wei, Bin

doi:10.1016/j.orgel.2018.06.019

Cited by 8 publications

(5 citation statements)

References 33 publications

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“…As indicated in figure 8, the significantly enhanced lighting performance of the green TADF OLED stems from the lowered work function (from 5.2 eV to 5.4 eV) of PEDOT:PSS by sorbitol doping [28], and faster hole/ electron transport attributed by sorbitol doping and TPBithickness tuning thus increasing the probability of charge recombination.…”

Section: Resultsmentioning

confidence: 99%

Highly efficient green TADF organic light-emitting diodes by simultaneously manipulating hole and electron transport

Wang¹,

Zheng²,

Tang³

et al. 2019

Nanotechnology

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This work demonstrates effective performance improvement by simultaneous manipulating of the hole injection and electron transport layers for (4s,6s)-2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile (4CzIPN) based green thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs). A 3 wt% sorbitol doped PEDOT:PSS layer results in the highest maximum current efficiency (CEmax) of 28.28 cd A–1 and external quantum efficiency (EQE) of 17.04%. Single carrier devices denote that hole mobility gradually rises with the sorbitol ratio. The electroluminescence mainly originates from the emission of 4CzIPN. Atomic force microscopy images imply that 3 wt% sorbitol doped PEDOT:PSS film includes the largest PEDOT aggregate, which contributes to a higher electric conductivity thus the better performance of 3 wt% sorbitol doped device. Also the 4CzIPN ratio in the emissive layer was optimized, and 4 wt%-4CzIPN in CBP achieves the highest EQE of 20.99% and CEmax of 34.99 cd A–1. The EL spectrum is independent of the luminous angle at a low 4CzIPN ratio but becomes more sensitive to the luminous angle at a high 4CzIPN ratio. Finally, we find out that the TADF OLED performance is very sensitive to TPBi thickness ranging from 20 nm to 65 nm, and 40 nm of TPBi achieves a CEmax up to 64.10 cd A–1 and an excellent EQE of 25.14%, ascribing from its more balanced carrier transport.

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Section: Resultsmentioning

confidence: 99%

Highly efficient green TADF organic light-emitting diodes by simultaneously manipulating hole and electron transport

Wang¹,

Zheng²,

Tang³

et al. 2019

Nanotechnology

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“…[54] Subsequently, PDPP3T was extensively studied for its applications in organic solar cells. [49][50][51][52][53][54] For example, PDPP3T has been used as a hole transport layer in perovskite solar cells, resulting in excellent photovoltaic performance and high air stability. [49] It has also been utilized as an active layer in organic/amorphous silicon hybrid tandem solar cells, leading to improved open-circuit voltage.…”

Section: Introductionmentioning

confidence: 99%

UV to NIR Broadband Flexible Photodetector Based on Solution‐Processed MoS₂/PDPP3T Inorganic–Organic Hybrid Heterostructures

Tang,

Du,

Xie

et al. 2024

Adv Materials Inter

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Molybdenum disulfide (MoS2) is a 2D material with excellent electrical and optical properties, and developing a universal technology for the preparation of high‐performance MoS2‐based photodetector is extremely desirable. Here, a UV to NIR broadband flexible photodetector based on MoS2/(PDPP3T) inorganic–organic hybrid heterostructures is reported. In the experiment, high crystalline 2H‐phase few‐layer MoS2 nanoflakes are first prepared by optimized electrochemical intercalation of tetraheptylammonium cation (THA+) and ultrasound‐assisted exfoliation strategy. Thereafter, a narrow bandgap organic semiconductor PDPP3T is introduced to construct the MoS2/Poly(diketopyrrolopyrrolothiophrn) (PDPP3T) heterojunction. Experimental results reveal that the photodetector can have broadband photo response from 380 to 980 nm. Meanwhile, excellent responsivities and detectivity of 12.4 mA W−1, 2.2 × 1010 Jones at 380 nm and 0.1 mA W−1 and 5 × 108 Jones at 980 nm are achieved, which are ≈10 (UV band)/100 (NIR band) times high than that obtained on the pure MoS2‐based detector. Moreover, the flexibility of the device is investigated by conformal covering the device on a curved surface (R = 5 and 2.5 mm), it shows that the photo response remains almost the same as that measured on the planar substrate, indicating the possible application in the wearable electronics.

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“…PEDOT/PSS was used in our previous study as a conductive binder for a QTTFQ triad (Q: p -benzoquinone, TTF: tetrathiafulvalene) active material . A sugar alcohol, d -sorbitol, was added to PEDOT/PSS to enhance its conductivity − alongside its adhesivity , and elasticity . The glass filter separator was modified by coating it with PEDOT/PSS and d -sorbitol to hinder the dissolution of the organic active material.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Battery Performance of Indigo, an Organic Electrode Material, Using PEDOT/PSS with d-Sorbitol

et al. 2020

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Rare-metal-free and high-performance secondary batteries are necessary for improving the efficiency of renewable energy systems. Organic compounds are attractive candidates for the active material of such batteries. Many studies have reported organic active materials that show high energy density per active material weight. However, organic active materials, most of which exhibit low conductivity and low specific density, typically require a large amount of a conductive additive (>50 wt %) to obtain a high utilization rate. Therefore, organic active materials rarely display high energy density per electrode weight. High energy densities per electrode weight can be obtained using high weight fractions of active materials and low weight fractions of conductive additives. Herein, we report that a low-conductivity organic active material, indigo, showed improved net discharge capacity density when even a small amount of a conductive polymer composite, poly(3,4-ethylenedioxythiophene)/polystyrene sulfonic acid (PEDOT/PSS) with d -sorbitol, was used as both a binder and conductive additive. The cycle life was also improved by coating one side of the separator with the composite, which probably hindered the dissolution of the active material. A discharge capacity of 96% of the theoretical capacity of indigo and an improved cycle life were achieved with an electrode containing 80 wt % indigo and with a PEDOT/PSS-coated separator. The optimal fraction of the conductive binder was examined, and the mechanism of conductivity enhancement was discussed. The present scheme allows us to replace the dispersion solvent of the slurry, N -methylpyrrolidone, with water, which can reduce the environmental load during battery manufacturing processes.

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Enhanced photovoltaic performance of PDPP3T bulk heterojunction using D-sorbitol doped PEDOT:PSS

Cited by 8 publications

References 33 publications

Highly efficient green TADF organic light-emitting diodes by simultaneously manipulating hole and electron transport

Highly efficient green TADF organic light-emitting diodes by simultaneously manipulating hole and electron transport

UV to NIR Broadband Flexible Photodetector Based on Solution‐Processed MoS₂/PDPP3T Inorganic–Organic Hybrid Heterostructures

Improvement of the Battery Performance of Indigo, an Organic Electrode Material, Using PEDOT/PSS with d-Sorbitol

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Enhanced photovoltaic performance of PDPP3T bulk heterojunction using D-sorbitol doped PEDOT:PSS

Cited by 8 publications

References 33 publications

Highly efficient green TADF organic light-emitting diodes by simultaneously manipulating hole and electron transport

Highly efficient green TADF organic light-emitting diodes by simultaneously manipulating hole and electron transport

UV to NIR Broadband Flexible Photodetector Based on Solution‐Processed MoS2/PDPP3T Inorganic–Organic Hybrid Heterostructures

Improvement of the Battery Performance of Indigo, an Organic Electrode Material, Using PEDOT/PSS with d-Sorbitol

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UV to NIR Broadband Flexible Photodetector Based on Solution‐Processed MoS₂/PDPP3T Inorganic–Organic Hybrid Heterostructures