C60 Concentration Influence on MEH-PPV:C60 Bulk Heterojunction-Based Schottky Devices

Sharma, Nidhi; Negi, Chandra Mohan Singh; Verma, Ajay Singh; Gupta, Saral K.

doi:10.1007/s11664-018-6629-3

Cited by 15 publications

(4 citation statements)

References 40 publications

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“…On the other side at the interface C 1 shows the double layer capacitance between electrolyte and Pt counter electrode and as well as between electrolyte and TiO 2 film [27,28]. The values of all the parameters of Nyquist plots of DSSC based on TiO 2 photoanode with the equivalent circuit are summarized in Table. In the bode plot of cell based on photoanode TiO 2 under the solar irradiation, the frequency was shifted in higher frequency region with the TiO 2 photoanode as shows in figure 4(b).According to curve recombination charge transfer processes at the TiO 2 /dye/electrolyte interface is low and enhance the electron transmission [29,30]. On the other hand illumination condition f max is inversely proportional to the electron transport time as τ s =1/ (2πf max ), increment in f max shows the increased rate of charge transport process in DSSC [24].…”

Section: Resultsmentioning

confidence: 94%

Synthesis and Characterization of TiO2 thin film Electrode based Dye Sensitized Solar Cell

Yadav

Chaudhary

Gupta

et al. 2020

EEJP

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Dye-Sensitized Solar Cells (DSSCs) are prominent alternative devices to conventional p-n junction silicon based solar cells because of their low fabrication cost and high power conversion efficiency, good cost/efficiency ratio. In the present work, DSSC devices were made-up with fluorine doped tin oxide (FTO) glass substrate, a TiO2 compact layer was deposited on FTO, Ruthenium(II) dye (N719), an iodide - triiodide electrolyte and a platinum (Pt) counter electrode. Photo anode with thin film layers of TiO2 and Pt counter electrode (photo-cathode) were prepared. Field emission electron microscope (FESEM) was employed to investigate the surface morphology of TiO2 layers. The DSSC device efficiency was evaluated by J-V characteristics. Fabricated devices were exhibited high power conversion efficiencies. The electrochemical impedance characteristics were analyzed by fitting the experimental results to the corresponding electrical equivalent circuit simulated data.

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Section: Resultsmentioning

confidence: 94%

Synthesis and Characterization of TiO2 thin film Electrode based Dye Sensitized Solar Cell

Yadav

Chaudhary

Gupta

et al. 2020

EEJP

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“…Figure 7(b) shows the dark J-V curve of champion perovskite devices. By fitting the Schottky equation to the dark J-V curve, the performance parameters are analyzed by the following expression [30,31]: where q is the electron charge, V is the voltage, k is the Boltzmann constant, T is the absolute temperature, η is the ideal factor of the diode, J 0 is the reverse saturation current density, Φ B is the Schottky barrier height, and A * is the Richardson's constant. The performance parameters of the PSCs obtained are shown in table 1.…”

Section: Resultsmentioning

confidence: 99%

Green-solvent-processed lead-free perovskite solar cells

He,

Zhang,

Chen

et al. 2024

J. Phys. D: Appl. Phys.

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Tin-based perovskite has been considered as one of the most potential candidates for the lead-based perovskite. The solution proceed method were widely utilized in fabricating tin perovskite solar cells. So far, all fabrication process for tin perovskite solar cells involved the toxic organic solvents, which is contrary to the development of environmentally friendly perovskite solar cells. In this study, we report for the first time, by using a mixed green solvent N-diethyl formamide and green 1,3-Dimethyl-3,4,5,6-Tetrahydro-2 (1H)-pyrimidinone as precursor solvent, and a green solvent dibutyl ether as antisolvent, a high-quality FA0.75MA0.25SnI3 film was achieved. The optical band gap of the prepared perovskite layer was 1.36 eV, which was close to the ideal band gap. The green-solution-proceed perovskite films showed reduced defect density. As a consequence, the champion green-solution-proceed photovoltaic device achieved a power conversion efficiency of 4.4%. Moreover, it still maintains 80% of the initial efficiency after 600 hours storage in a nitrogen atmosphere. This work would promote the perovskite solar cells from a “new” technique to the “new and green” technique.

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“…CPE 2 replicates the chemical capacitance ( C μ ), which provides information about the charge accumulation at the interfaces. The R CT , R rec and C μ and effective lifetime ( τ n ) of the device are found to be 1.896 × 10 2 kΩ, 400.65 Ω, 0.2977 µF and 119.302 µs, respectively [28].…”

Section: Resultsmentioning

confidence: 99%

Charge transport and impedance analysis of solution‐processed perovskite‐based device

Chaudhary

Yadav

Negi

et al. 2020

Micro & Nano Letters

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Herein, this work scrutinises the charge transport properties of solution-processed methylammonium lead iodide (MAPbI 3) perovskite-based hole only device through the DC current-voltage and AC impedance spectroscopy analysis. The device shows a significant increase in the current levels under illumination. Key diode parameters were estimated from the dark I-V curves. The dominance of Ohm's law at low bias, space charge limited conduction (SCLC) followed trap controlled SCLC at higher applied bias was observed from charge transport analysis. From the region dominated by the trap free SCLC, the hole mobility of 4.02 × 10 −6 cm 2 V −1 s −1 inside the perovskite layer was extracted. The measured impedance spectrum was analysed by fitting it with the equivalent circuit model, and the various physical parameters, such as charge transport resistance, recombination resistance and associated capacitance were approximated for the device.

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C60 Concentration Influence on MEH-PPV:C60 Bulk Heterojunction-Based Schottky Devices

Cited by 15 publications

References 40 publications

Synthesis and Characterization of TiO2 thin film Electrode based Dye Sensitized Solar Cell

Synthesis and Characterization of TiO2 thin film Electrode based Dye Sensitized Solar Cell

Green-solvent-processed lead-free perovskite solar cells

Charge transport and impedance analysis of solution‐processed perovskite‐based device

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