Effect of cadmium sulphide quantum dot processing and post thermal annealing on P3HT/PCBM photovoltaic device

Khan, Mohd Taukeer; Bhargav, Ranoo; Kaur, Amarjeet; Dhawan, S. K.; Chand, Suresh

doi:10.1016/j.tsf.2010.08.032

Cited by 51 publications

(18 citation statements)

References 34 publications

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“…7 To address these fundamental limitations of polymer solar cells, inorganic NCs are blended with organic materials which integrate the benefits of both classes of materials. Various NCs including CdS, 8 cadmium selenide (CdSe), 9,10 CdTe, 11 PbS, 12 ZnO, 13 and TiO 2 14 have been widely studied for hybrid solar cell fabrication. However, the efficiency of organic/inorganic hybrid solar cells reported so far is still less than 5%, which is still far from the requirement for the next-generation solar cell for commercial applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and optoelectrical properties of f-graphene/cadmium selenide hybrid system

et al. 2015

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Abstract. The present work demonstrates the synthesis of a hybrid accepter material containing amino-functionalized graphene oxide (GO) and an inorganic semiconducting material, cadmium selenide (CdSe). First, amino-functionalized graphene was synthesized and then nanocrystals (NCs) of CdSe were in situ grown in the functionalized-(GO) matrix named f-GCdSe. Structural studies such as x-ray diffraction, and a scanning electron microscopic were employed to investigate the growth of CdSe NCs in the graphene matrix. To understand the charge generation and transfer process at the donor/acceptor interface, the absorption, photoluminescence (PL), and transient absorption spectroscopic (TAS) studies have been carried out in poly(3-hexylthiophene) (P3HT)/f-GCdSe thin films. PL quenching in P3HT/f-GCdSe thin film suggests that charge transfer takes place at the donor/acceptor interface. TAS shows higher optical density and long lived free carriers for P3HT/f-GCdSe thin film. These results suggest that f-GCdSe is an excellent electron-acceptor material for organic photovoltaic devices.

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Section: Introductionmentioning

confidence: 99%

Synthesis and optoelectrical properties of f-graphene/cadmium selenide hybrid system

et al. 2015

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“…The PL intensity of the nanocomposites has been significantly reduced as compared to the value of pristine P3HT, and the reduction of PL intensity has been increased with the increase of the CdTe concentration in polymer. The reason for the photoluminescence quenching in composites may be due to the p-p interaction of P3HT with CdTe, 23 forming additional decaying paths of the excited electrons through the CdTe (see Fig. 2(a)).…”

Section: Resultsmentioning

confidence: 99%

Hole transport mechanism in organic/inorganic hybrid system based on in-situ grown cadmium telluride nanocrystals in poly(3-hexylthiophene)

Khan

Kaur

Dhawan

et al. 2011

Journal of Applied Physics

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The present manuscript demonstrates the hole transport mechanism in an organic/inorganic hybrid system based on in-situ grown cadmium telluride (CdTe) nanocrystals in a poly(3-hexylthiophene) (P3HT) matrix. The increase of hole current in the hybrid system is correlated with the formation of a host-guest (P3HT-CdTe) charge transfer complex duly supported by photoluminescence quenching. The hole transport mechanism in P3HT is governed by a space charge limited current with temperature, carrier density, and field dependent mobility. Incorporation of CdTe nanocrystals in a polymer matrix results in enhancement in the value of trap density H b from 2.8 Â 10 18 to 5.0 Â 10 18 cm À3 and reduction in activation energies from 52 meV to 11 meV. At high trap density, trap potential wells start overlapping; this results in decrease of activation energies.

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“…However exciton diffusion length is generally in the order of a few nm; this can be improved by interpenetrating electron donating and electron accepting materials on same size scale as the exciton diffusion length [8]. Several semi conducting and luminescent particles such as CdS, CdSe, CdTe [9][10][11] are used in making hybrid absorber layer for organic solar cells which offer low cost, large area conversion of solar energy to electricity. Most of the inorganic materials such as TiO 2 , SiO 2 , ZnO [12,13] and others are displayed in polymer matrix for obtaining composites.…”

Section: Introductionmentioning

confidence: 99%

Quantum dot sensitized solar cell based on poly (3-hexyl thiophene)/CdSe nanocomposites

Sehgal

Narula

2015

Optical Materials

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Effect of cadmium sulphide quantum dot processing and post thermal annealing on P3HT/PCBM photovoltaic device

Cited by 51 publications

References 34 publications

Synthesis and optoelectrical properties of f-graphene/cadmium selenide hybrid system

Synthesis and optoelectrical properties of f-graphene/cadmium selenide hybrid system

Hole transport mechanism in organic/inorganic hybrid system based on in-situ grown cadmium telluride nanocrystals in poly(3-hexylthiophene)

Quantum dot sensitized solar cell based on poly (3-hexyl thiophene)/CdSe nanocomposites

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