Photoelectrochemical Complexes of Fucoxanthin-Chlorophyll Protein for Bio-Photovoltaic Conversion with a High Open-Circuit Photovoltage

2017 ◽  
Vol 12 (23) ◽  
pp. 2996-2999 ◽  
Author(s):  
Tianning Zhang ◽  
Cheng Liu ◽  
Wenjing Dong ◽  
Wenda Wang ◽  
Yan Sun ◽  
...  
Keyword(s):  
Open Circuit ◽  
Photovoltaic Conversion ◽  
Chlorophyll Protein ◽  
Open Circuit Photovoltage

Thiocyanate Free Ruthenium(II) Complexes for Dye Sensitized Solar Cells (DSSCs)

2018 ◽  
Vol 382 ◽  
pp. 369-373
Author(s):  
Usana Mahanitipong ◽  
Preeyapat Prompan ◽  
Rukkiat Jitchati
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Visible Region ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Dye Sensitized ◽  
Ligand Charge Transfer ◽  
Sensitized Solar Cells ◽  
Open Circuit Photovoltage

The four thiocyanate free ruthenium(II) complexes; [Ru(N^N)2(C^N)]PF6were synthesized and characterized for dye sensitized solar cells (DSSCs). The results showed that the broad absorptions covered the visible region from metal to ligand charge transfer (MLCT) were obtained with the main peaks at 560, 490 and 400 nm. The materials were studied DSSC performance under standard AM 1.5. Compound PP1 showed the power conversion efficiency (PCE) at 3.10%, with a short-circuit photocurrent density (Jsc) of 7.99 mA cm-2, an open-circuit photovoltage (Voc) of 563 mV and a high fill factor (ff) of 0.690.

Theory of injection photovoltages in organic insulators

1976 ◽  
Vol 29 (10) ◽  
pp. 2123 ◽  
Author(s):  
JS Bonham
Keyword(s):  
Light Intensity ◽  
Surface States ◽  
Threshold Value ◽  
High Light Intensity ◽  
Open Circuit ◽  
Charge Carriers ◽  
Single Carrier ◽  
Injection Mechanism ◽  
Wavelength Variation ◽  
Open Circuit Photovoltage

Development of an open-circuit photovoltage, U, in an organic insulator by photoinjection of charge carriers from the electrodes is treated theoretically. In the single-carrier case (both electrodes injecting the same carrier) it is shown that, in the absence of surface traps, U increases at a rate of 60 mV per decade of light intensity, II, above a threshold value of II. Photoinjection from the back (unilluminated) electrode by incompletely absorbed light causes U to become independent of ll at high light intensity. The same process may also cause U to change sign as the wavelength approaches an absorption minimum of the organic. Traps in the bulk of the insulator do not affect the single-carrier photovoltage, but traps at the surface may complicate the intensity dependence of U if they are involved in the injection mechanism. They may for example cause U to decrease and change sign at high n. Only shallow surface traps are considered. Possible effects of surface states are discussed briefly. The major assumption of this paper--neglect of all but injected charge carriers-breaks down in principle in the two-carrier case. However, if there are no sources of photovaltage in the bulk of the insulator the two-carrier case gives a stronger dependence of U on II, and no saturation or possibility of change of sign with wavelength variation. Predictions of the model are shown to agree with the results for a number of systems reported in the literature.

Studies on open-circuit photovoltage in heavily doped abrupt p−n junction

1992 ◽  
Vol 35 (10) ◽  
pp. 1564-1566
Author(s):  
S.S. De ◽  
A.K. Ghosh ◽  
T.K. Pattanayak ◽  
A.K. Hazra ◽  
J.C. Haldar
Keyword(s):  
Open Circuit ◽  
Heavily Doped ◽  
Open Circuit Photovoltage

INDEPENDENT GROWTH OF LARGE SCALE CdS NANOROD ARRAYS ON DIFFERENT INTERFACES WITH EFFICIENT PHOTOELECTRICAL PERFORMANCE

2013 ◽  
Vol 06 (01) ◽  
pp. 1350005 ◽  
Author(s):  
BINGWEI LUO ◽  
YUAN DENG ◽  
YAO WANG ◽  
YONGMING SHI ◽  
LILI CAO ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Large Scale ◽  
Short Circuit ◽  
Open Circuit ◽  
Nanorod Arrays ◽  
Cds Nanorods ◽  
Simple Strategy ◽  
One Step ◽  
Energy Conversion Devices ◽  
Open Circuit Photovoltage

Large-scale CdS nanorod arrays have been prepared directly by a simple one-step and non-template magnetron sputtering method on different substrates. Parallel and uniform CdS nanorods with diameters ∼ 70 nm were self-assembled with (00l) orientation regardless of the substrate. The CdS nanorod arrays showed high open-circuit photovoltage, short-circuit photocurrent intensity and excellent photosensitivity properties with a switching "ON/OFF" ratio as high as 60. This study provides a simple strategy to grow CdS nanorod arrays without the constraints introduced by the substrate and opens a new potential for the application of CdS nanorod arrays in photodetectors and nanostructured solar energy conversion devices.

Fabrication and I-V Characteristics of Nanocrystalline Titania Electrode Sensitized by Zinc Phthalocyanine

2006 ◽  
Vol 326-328 ◽  
pp. 365-368 ◽  
Author(s):  
Yu Qiao Wang ◽  
Chun Ping Liu ◽  
Kang Li ◽  
Yue Ming Sun
Keyword(s):  
Lauric Acid ◽  
Short Circuit ◽  
Transparent Conducting Oxide ◽  
Sol Gel ◽  
Photocurrent Density ◽  
Open Circuit ◽  
Zinc Phthalocyanine ◽  
Solar Simulator ◽  
Oxide Substrate ◽  
Open Circuit Photovoltage

TiO2 colloids prepared by sol-gel method were autoclaved and then deposited onto a transparent conducting oxide substrate by screen-printing. The TiO2 films electrode was characterized by XRD, SEM, AFM and Alpha-Step profilometer and then sensitized by zinc phthalocyanine (ZnPc), 2,9,16,23-tetracarboxy zinc phthalocyanine (ZnTCPc) and ZnTCPc/lauric acid respectively. Photocurrent density (I) and photovoltage (V) of the electrode were measured with the solar simulator. The ZnTCPc-sensitized electrode was found the best performance with the short-circuit photocurrent density (Isc) 16.66 3A/cm2, the open-circuit photovoltage (Voc) 277.9 mV and the fill factor (FF) 0.39. And the ZnPc-sensitized electrode was found the worst performance with Voc 114.2 mV, Isc 2.26 3A/cm2 and FF 0.31. It was also found that lauric acid promoted Voc of the the ZnTCPc sensitized system.

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