Dark and photoelectric conversion properties of p-MgPc/n-Si (Organic/Inorganic) heterojunction cells.

Riad, S.

doi:10.1016/s0040-6090(99)00951-7

Cited by 105 publications

(37 citation statements)

References 15 publications

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“…Therefore, it is difficult to estimate the contribution of Si and organic component to the light absorption and photoconversion. Only in study [35], the photocurrent spectrum of nSi/MgPc device was detected, and matches well with the optical absorption of MgPc. This is indicative of the dominating role of organic layer in the photoconversion process (note that the minimal thickness of MgPc film was 170 nm, which could be sufficient to block the light for Si component).…”

Section: Semiconductor-small Molecules Solar Cellssupporting

confidence: 60%

“…Therefore, most of the reported studies of semiconductor-small molecules hybrid cells are related to Pc and Ph compounds. In particular, pSi/CuPc [32], Si/ZnPc [33,34], nSi/MgPc [35], pSi/NiPc [36], nGaAs/CuPc [37] and nSi/TTP [38] ( Figure 2) hybrid solar cells were reported in literature with conversion efficiencies in the range of 1-3.5%. An additional advantage of phtalocyamines is their exceptional chemical stability.…”

Section: Semiconductor-small Molecules Solar Cellsmentioning

confidence: 74%

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Organic / IV, III-V Semiconductor Hybrid Solar Cells

Ong

Levitsky

2010

Energies

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Abstract:We present a review of the emerging class of hybrid solar cells based on organic-semiconductor (Group IV, III-V), nanocomposites, which states separately from dye synthesized, polymer-metal oxides and organic-inorganic (Group II-VI) nanocomposite photovoltaics. The structure of such hybrid cell comprises of an organic active material (p-type) deposited by coating, printing or spraying technique on the surface of bulk or nanostructured semiconductor (n-type) forming a heterojunction between the two materials. Organic components include various photosensitive monomers (e.g., phtalocyanines or porphyrines), conjugated polymers, and carbon nanotubes. Mechanisms of the charge separation at the interface and their transport are discussed. Also, perspectives on the future development of such hybrid cells and comparative analysis with other classes of photovoltaics of third generation are presented.

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Section: Semiconductor-small Molecules Solar Cellssupporting

confidence: 60%

Section: Semiconductor-small Molecules Solar Cellsmentioning

confidence: 74%

Organic / IV, III-V Semiconductor Hybrid Solar Cells

Ong

Levitsky

2010

Energies

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“…1,2 The chemical structure of this group of molecules (see Fig. 1), similar to the active sites of chlorophyll, hemoglobin, and different enzymes, makes them appealing as biomimetic catalysts in oxidation reactions.…”

Section: Introductionmentioning

confidence: 99%

Potassium-intercalated H2Pc films: Alkali-induced electronic and geometrical modifications

Åhlund

Shariati

Schiessling

et al. 2012

The Journal of Chemical Physics

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Potassium-intercalated H2Pc filmsNilson, K.; Ahlund, J.; Shariati, M. -N.; Schiessling, J.; Palmgren, P.; Brena, B.; Gothelid, E.; Hennies, F.; Huismans, Y.; Evangelista, F. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. X-ray spectroscopy studies of potassium intercalated metal-free phthalocyanine multilayers adsorbed on Al(110) have been undertaken. Photoelectron spectroscopy measurements show the presence of several charge states of the molecules upon K intercalation, due to a charge transfer from the alkali. In addition, the comparison of valence band photoemission spectra with the density functional theory calculations of the density of states of the H 2 Pc − anion indicates a filling of the formerly lowest unoccupied molecular orbital by charge transfer from the alkali. This is further confirmed by x-ray absorption spectroscopy (XAS) studies, which show a decreased density of unoccupied states. XAS measurements in different experimental geometries reveal that the molecules in the pristine film are standing upright on the surface or are only slightly tilted away from the surface normal but upon K intercalation, the molecular orientation is changed in that the tilt angle of the molecules increases.

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“…However, the current curve in forward bias becomes quickly dominated by series resistance from contact wires or bulk resistance of the semiconductor, which causes a curvature at high current in the semilogarithmic IV plot. Figure 5a could be used to determine R s of the junction [9]. Thus, for a given I, the horizontal displacement between the actual curve and the extrapolated linear part gives the voltage drop, ∆V (= IR s , across the neutral region).…”

Section: Dark Currentvoltage Characteristicsmentioning

confidence: 99%

Influence of Temperature and Illumination on the Electrical Characteristics of Nanocrystalline Cu₂S Based Heterojunctions for Photodetector Application

et al. 2015

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In this work, heterojunctions of Cu2S/p-Si were prepared by high vacuum thermal evaporation technique and examined as a photodetector structure. The dark currentvoltage (IV ) characteristics of the heterojunctions measured at dierent temperatures ranging from 303 to 373 K were investigated. The predominant conduction mechanisms, series resistance, ideality factor and potential barrier height were determined. The downward curvature at suciently large voltages in the IV characteristics is caused by the eect of series resistance Rs. The ideality factor obtained from IV characteristics is larger than unity which can be attributed to the presence of a thin interfacial insulator layer between the metal and semiconductor. The photocurrent properties of the device under reverse bias using various illuminations were also explored for checking the validity of photodetector application of the studied device. The responsivity of light for the device under reverse bias conrms that the Cu2S/p-Si heterojunctions are valid for photodetector application. Moreover, these results suggest that the fabricated diode can be used for optical sensor applications. The capacitancevoltage characteristics of diode were also investigated at high frequency of 1 MHz.

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Dark and photoelectric conversion properties of p-MgPc/n-Si (Organic/Inorganic) heterojunction cells.

Cited by 105 publications

References 15 publications

Organic / IV, III-V Semiconductor Hybrid Solar Cells

Organic / IV, III-V Semiconductor Hybrid Solar Cells

Potassium-intercalated H2Pc films: Alkali-induced electronic and geometrical modifications

Influence of Temperature and Illumination on the Electrical Characteristics of Nanocrystalline Cu₂S Based Heterojunctions for Photodetector Application

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Dark and photoelectric conversion properties of p-MgPc/n-Si (Organic/Inorganic) heterojunction cells.

Cited by 105 publications

References 15 publications

Organic / IV, III-V Semiconductor Hybrid Solar Cells

Organic / IV, III-V Semiconductor Hybrid Solar Cells

Potassium-intercalated H2Pc films: Alkali-induced electronic and geometrical modifications

Influence of Temperature and Illumination on the Electrical Characteristics of Nanocrystalline Cu2S Based Heterojunctions for Photodetector Application

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Influence of Temperature and Illumination on the Electrical Characteristics of Nanocrystalline Cu₂S Based Heterojunctions for Photodetector Application