Quantum size effects in the study of chemical solution deposition mechanisms of semiconductor films

Gorer, S.; Hodes, Gary

doi:10.1021/j100071a026

Cited by 455 publications

(268 citation statements)

References 8 publications

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“…[4][5][6][7][8][9][10][11][12] Their absorption spectrum can be tailored by changing their size, [13][14][15][16] which makes them attractive for PV applications. Numerous architectures for QD-based solar cells were proposed including photoelectrochemical cells based on QD-sensitized wide-bandgap nanostructures, [17][18][19] QD films immersed in electrolyte, [20][21][22] solid-state cells based on QD/polymer blends [23][24][25] as well as QD layers sandwiched between electron and hole conductors. [26][27][28][29] Nanocomposite solar cells can be easily produced in different shapes and geometries, which allow self light tracking [30] and waveguide integration.…”

Section: Introductionmentioning

confidence: 99%

Quantum‐Dot‐Sensitized Solar Cells

Rühle¹,

Shalom²,

Zaban³

2010

ChemPhysChem

850

511

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Quantum‐dot‐sensitized solar cells (QDSCs) are a promising low‐cost alternative to existing photovoltaic technologies such as crystalline silicon and thin inorganic films. The absorption spectrum of quantum dots (QDs) can be tailored by controlling their size, and QDs can be produced by low‐cost methods. Nanostructures such as mesoporous films, nanorods, nanowires, nanotubes and nanosheets with high microscopic surface area, redox electrolytes and solid‐state hole conductors are borrowed from standard dye‐sensitized solar cells (DSCs) to fabricate electron conductor/QD monolayer/hole conductor junctions with high optical absorbance. Herein we focus on recent developments in the field of mono‐ and polydisperse QDSCs. Stability issues are adressed, coating methods are presented, performance is reviewed and special emphasis is given to the importance of energy‐level alignment to increase the light to electric power conversion efficiency.

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Section: Introductionmentioning

confidence: 99%

Quantum‐Dot‐Sensitized Solar Cells

Rühle¹,

Shalom²,

Zaban³

2010

ChemPhysChem

850

511

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“…Among the II-VI group elements, CdSe is an important material for the development of various modern technologies of low cost devices such as light emitting diodes, solar cells, photodetectors, electrophotography, lasers and high-efficiency thin film transistors etc. [5][6][7]. The distribution of grain size and other structural and morphological properties of the films strongly affect the performance and reliability of active devices fabricated on such layers.…”

Section: Introductionmentioning

confidence: 99%

Effect of Substrate Temperature on the Structural and Optical Properties of Nanocrystalline Cadmium Selenide Thin Films Prepared by Electron Beam Evaporation Technique

Kissinger¹,

Suthagar

Kumar

et al. 2010

Acta Phys. Pol. A

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Cadmium selenide (CdSe) thin films on glass substrates were prepared by physical vapour deposition under vacuum using the electron beam evaporated technique for different substrate temperatures: room temperature, 100, 200, 300• C, respectively. X-ray diffraction analysis indicates that the films are polycrystalline, having hexagonal (wurtzite) structure irrespective of their substrate temperature. All the films show most preferred orientation along (0 0 2) plane parallel to the substrates. The microstructural parameters such as particle size, stress, strain and dislocation density were calculated. The grain size of deposited CdSe films is small and is within the range of 18 to 42 nm. The optical absorption spectra of electrom beam deposited CdSe films were studied in the wavelength region of 250-2500 nm. The energy gap (Eg) values (allowed direct transitions), calculated from the absorption spectra, ranged between 1.77 and 1.92 eV. The surface morphological quality of electron beam evaporated CdSe films were analyzed by scanning electron microscopy and atomic force microscopy.

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“…[1][2][3][4][5] The advantages of semiconductor NP sensitizers include a large absorption coefficient, a tunable energy gap (E g ) due to the quantum-size effect, and multiple exciton generation by a single photon. [6][7][8] To date, the most widely studied NP sensitizers have been binary metal chalcogenides such as CdS, CdSe, PbS, Sb 2 S 3 , and Ag 2 S. 1,2,[9][10][11] Recently, SSCs based on ternary metal chalcogenides such as AgSbS 2 , AgBiS 2 , CuSbS 2 , AgInS 2 , and CuSbSe had also been reported. [12][13][14][15][16][17] In the synthesis of metal chalcogenides, the sulfur sources could be chosen from sodium sulfide (Na 2 S), sodium thiosulfate (Na 2 S 2 O 3 ), elemental sulfur powder, or thiourea (CH 4 N 2 S).…”

mentioning

confidence: 99%

Sodium antimony sulfide (NaSbS2): Turning an unexpected impurity into a promising, environmentally friendly novel solar absorber material

et al. 2016

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We present a novel absorber material—NaSbS2—for solar cells. NaSbS2 is formed as an unexpected byproduct in the chemical synthesis of Sb2S3. However, NaSbS2 has many attractive features for a solar material. Here single phase NaSbS2 nanoparticles were synthesized through solution processing. NaSbS2 semiconductor-sensitized solar cells were demonstrated for the first time. The best cell yielded Jsc = 10.76 mA/cm2, Voc = 0.44 V, FF = 48.6%, and efficiency η = 2.30% under 1 sun. At the reduced 0.1 sun, the η increased to 3.18%—a respectable η for a new solar material.

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Quantum size effects in the study of chemical solution deposition mechanisms of semiconductor films

Cited by 455 publications

References 8 publications

Quantum‐Dot‐Sensitized Solar Cells

Quantum‐Dot‐Sensitized Solar Cells

Effect of Substrate Temperature on the Structural and Optical Properties of Nanocrystalline Cadmium Selenide Thin Films Prepared by Electron Beam Evaporation Technique

Sodium antimony sulfide (NaSbS2): Turning an unexpected impurity into a promising, environmentally friendly novel solar absorber material

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