Ligand-dependent transient absorption studies of hybrid polymer:CdSe quantum dot composites

Sharma, Shailesh N.; Vats, Tanvi; Dhenadhayalan, N.; Ramamurthy, P.; Narula, Anudeep Kumar

doi:10.1016/j.solmat.2011.10.020

Cited by 51 publications

(31 citation statements)

References 29 publications

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“…In polymer-nanoparticles composites, PL quenching is caused by the existence and distribution of nanoparticles in polymer matrix. The degree of PL quenching gives information about the dispersion of nanoparticles in polymer and the quality of interface between the polymer and nanoparticles [21]. The two basic requirements make it energetically favorable:…”

Section: Regioregularity and Thermal Stability Of P3htmentioning

confidence: 99%

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

Sehgal

Narula

2015

Optical Materials

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Section: Regioregularity and Thermal Stability Of P3htmentioning

confidence: 99%

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

Sehgal

Narula

2015

Optical Materials

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“…(2)exciton formation in 4T, followed by energy transfer to CdS NPs and then by hole transfer to 4T; and (3) exciton formation in CdS NPs, followed by hole transfer to 4T [33].…”

Section: Optical Characterization Of 4t and 4t:20 %[Cds] Thin Filmsmentioning

confidence: 99%

Photogeneration process in bulk heterojunction solar cell based on quaterthiophene and CdS nanoparticles

et al. 2015

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In this paper, the blended systems composed of organic oligothiophenes and CdS nanoparticles were investigated through their optical and photoelectrical measurements for their potential applications in photovoltaic devices. The electrical and photoelectrical properties of the devices fabricated with the active layer sandwiched between the metal anode and the metal cathode have been reported. Dependence of the performance of this bulk heterojunction photovoltaic device on their composition has been investigated with respect to charge transport. The organic/inorganic interface area in bulk heterojunction is an important factor in the photovoltaic process. The incorporation of nanoparticles in the polymer matrix, for the purpose to fabricate hybrid inorganic-organic materials, could be a good alternative to enhance the charge generation process of free carriers. The J-V curves of the quaterthiophene (4T) and hybrid quaterthiophene/cadmium sulfide nanoparticles CdS show the important role played by the nanoparticles for energy conversion improvement. The experimental data were found to be in good agreement with a modified Braun-Onsager model.

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“…In recent years, due to the possibility to change the photo physical properties through simplified chemical synthesis and easy thin film processing, quantum dots (QD) and polymer:QD hybrids attract a lot of attention in UV-PD applications [1][2][3][4][5][6][7][8], as well as the other photonic applications, such as biological imaging and contrast agents [9,10], light-emitting devices (LEDs) [11,12] photovoltaic [13][14][15], etc. Most of the QDs used in UV-PDs are binary systems, the band gap of which are tuned by varying the diameter of the nanoparticle [1][2][3][4][5]7,8,16].…”

Section: Introductionmentioning

confidence: 99%

“…Most of the QDs used in UV-PDs are binary systems, the band gap of which are tuned by varying the diameter of the nanoparticle [1][2][3][4][5]7,8,16]. However in ternary QDs, the band gap may be tuned by the relative composition of materials used as well [6,17].…”

Section: Introductionmentioning

confidence: 99%

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An ultraviolet photodetector with an active layer composed of solution processed polyfluorene:Zn0.71Cd0.29S hybrid nanomaterials

Sevim

Memişoğlu

Varlıklı

et al. 2014

Applied Surface Science

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a b s t r a c tAn ultraviolet photodetector with an active layer of solution processed polymer:quantum dot hybrid is introduced. Poly[9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl] represents the polymer and Zn 0.71 Cd 0.29 S is the quantum dot used for the device. Photophysical studies showed that an electron transfer from the polymer to the ternary quantum dot is thermodynamically favored. Quenching experiments performed between the polymer and quantum dot indicates the formation of a non-fluorescent complex with an association constant of 4.6 × 10 4 M −1 . The device structure of ITO/PEDOT:PSS/ADS231BE: 50 wt% Zn 0.71 Cd 0.29 S/Al yielded a photoresponsivity value of 324 mA/W at −4 V under 1 mW/cm 2 illumination at 365 nm at room temperature and this value is further increased to 380 mA/W as a result of annealing at 75 • C.

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Ligand-dependent transient absorption studies of hybrid polymer:CdSe quantum dot composites

Cited by 51 publications

References 29 publications

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

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

Photogeneration process in bulk heterojunction solar cell based on quaterthiophene and CdS nanoparticles

An ultraviolet photodetector with an active layer composed of solution processed polyfluorene:Zn0.71Cd0.29S hybrid nanomaterials

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