Enhancement of Near-Infrared Singlet–Triplet Absorption of Ru(II) Sensitizers for Improving Conversion Efficiency of Solar Cells

2021 ◽  
Author(s):  
Takumi Kinoshita ◽  
Miki Otsubo ◽  
Takaoki Ono ◽  
Hiroshi Segawa
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Near Infrared ◽  
Triplet Absorption

Near-infrared absorbing porphyrin dyes with perpendicularly extended π-conjugation for dye-sensitized solar cells

RSC Advances ◽  
2014 ◽  
Vol 4 (92) ◽  
pp. 50897-50905 ◽  
Author(s):  
Wenhui Li ◽  
Zonghao Liu ◽  
Xiaobao Xu ◽  
Yi-Bing Cheng ◽  
Zhixin Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Near Infrared ◽  
Dye Sensitized Solar Cells ◽  
Energy Conversion Efficiency ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Two new near-infrared porphyrins exhibited energy conversion efficiency of 7.21% in dye-sensitized solar cells.

scholarly journals ZnO-CuO core-shell heterostructure for improving the efficiency of ZnO-based dye-sensitized solar cells

MRS Advances ◽  
2017 ◽  
Vol 2 (15) ◽  
pp. 857-862 ◽  
Author(s):  
Kichang Jung ◽  
Taehoon Lim ◽  
Yaqiong Li ◽  
Alfredo A. Martinez-Morales
Keyword(s):  
Solar Cells ◽  
Thermal Oxidation ◽  
Conversion Efficiency ◽  
Seed Layer ◽  
Near Infrared ◽  
Zno Nanorods ◽  
Dye Sensitized Solar Cells ◽  
Core Shell ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

ABSTRACTIn this work, the integration of ZnO-CuO core-shell nanostructures shows improvement in the conversion efficiency of ZnO-based dye-sensitized solar cells (DSSCs). This is due to CuO acting as a secondary absorption layer that allows the absorption of near-infrared (NIR) light increasing the generated photocurrent in the device, and as a blocking layer that reduces electron-hole recombination. The ZnO core and encapsulating CuO shell are synthesized through chemical vapor deposition (CVD), and thermal oxidation of a Cu seed layer, respectively. The crystallinity of the synthesized ZnO and CuO is analyzed by X-ray diffraction (XRD). Scanning electron microscope (SEM) images show the change in morphology through the steps of Cu seed layer deposition and thermal oxidation of this layer. To determine optical properties of CuO on ZnO nanorods, UV-Vis-NIR photospectrocopy is used. The comparison of conversion efficiency of DSSCs using two different photoelectrodes (i.e. ZnO nanorods versus ZnO-CuO core-shell nanostructure) is performed by I-V measurements.

scholarly journals Diketopyrrolopyrrole linked porphyrin dimers for visible-near-infrared photoresponsive nonfullerene organic solar cells

2020 ◽  
Vol 1 (7) ◽  
pp. 2520-2525
Author(s):  
Venkatesh Piradi ◽  
Xiaopeng Xu ◽  
Qiang Peng ◽  
Xunjin Zhu
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Near Infrared ◽  
Power Conversion ◽  
Porphyrin Dimers ◽  
Porphyrin Dimer

The binding of a porphyrin dimer donor (ETDPP-2P) and a non-fullerene acceptor IT-M leads to a visible-near-infrared photoresponse in all small molecule organic solar cells with a power conversion efficiency of 5.69%.

Enhanced conversion efficiency in perovskite solar cells by effectively utilizing near infrared light

Nanoscale ◽  
2016 ◽  
Vol 8 (30) ◽  
pp. 14432-14437 ◽  
Author(s):  
Meidan Que ◽  
Wenxiu Que ◽  
Xingtian Yin ◽  
Peng Chen ◽  
Yawei Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Near Infrared ◽  
Perovskite Solar Cells ◽  
Infrared Light ◽  
Near Infrared Light

Broad-absorbing tetrabenzocorrolazine green photosensitizer for the enhanced conversion efficiency in dye-sensitized solar cells

2016 ◽  
Vol 20 (07) ◽  
pp. 804-812
Author(s):  
Jun Choi ◽  
Woosung Lee ◽  
Jae P. Kim
Keyword(s):  
Solar Cells ◽  
Solar Energy ◽  
Conversion Efficiency ◽  
Near Infrared ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
The Novel ◽  
Additional Absorption ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Novel tetrabenzocorrolazine green photosensitizer was designed and synthesized to enhance the solar energy-to-electricity conversion efficiency of dye-sensitized solar cells. This near-infrared absorbing dye exhibited superior short-circuit photocurrent density induced from the additional absorption compared to the phthalocyanine dye commonly applied as a photosensitizer covering the near-infrared region in dye-sensitized solar cells. The introduction of bulky peripheral groups and axial substituents to the novel dye led to the increase of open-circuit photovoltage. As a result, the novel tetrabenzocorrolazine dye achieved a solar energy-to-electricity conversion efficiency of 3.78% under AM 1.5G conditions which was much higher than that of the phthalocyanine reference dye.

Preparation of the BaF2: Ce3+, Yb3+ Nanoparticles and near Infrared Luminescent Properties

2014 ◽  
Vol 707 ◽  
pp. 98-101
Author(s):  
Su Wen Li ◽  
Yi Jiang ◽  
Shu Guang Ju
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Hydrothermal Method ◽  
Conversion Efficiency ◽  
Near Infrared ◽  
Luminescent Properties ◽  
Photoluminescence Properties ◽  
Structure Morphology

The BaF2: Ce3+, Yb3+ nanoparticles doped with different concentration were prepared by a hydrothermal method. The structure,morphology and photoluminescence properties were studied. In BaF2: Ce3+, Yb3+ nanoparticles, a strong near infrared emissionat 900 – 1050 nm matching to energy of Si band gap of Si-based solar cells was observed under the excitation of 5d level of Ce3+. As a downconversion luminescent convertor, the kinds of materials have potential to be applied in front of Si-based solar cells to reduce thermalization loss and enhance conversion efficiency of solar cells.

Characteristics of a-SiC:H/a-SiGe:H hetero-junction thin film solar cells with and without a-Si:H buffer layer at the p/i interface

2014 ◽  
Vol 28 (17) ◽  
pp. 1450106 ◽  
Author(s):  
Won-Ho Son ◽  
Si-Hun Lee ◽  
Sie-Young Choi
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Buffer Layer ◽  
Conversion Efficiency ◽  
Amorphous Materials ◽  
Near Infrared ◽  
Type A ◽  
Thin Film Solar Cells ◽  
Solar Simulator

This article shows the characteristics on a - SiGe:H based solar cells with various structures. Based on these results, we proposed the a - SiC:H / a - SiGe:H hetero-junction thin film solar cells with a - Si:H buffer layer at the p/i interface to improve the performance of pin-type a - SiGe:H based solar cell. All films of amorphous materials were deposited by 13.56 MHz PECVD method. The effects of deposited parameters on the characteristics of a - SiC:H and a - SiGe:H films have been investigated by ultraviolet–visible–near infrared (UV–VIS–NIR) spectrophotometer. The various values of V oc , J sc , FF and η were measured under 100 mW/cm2 (AM 1.5) solar simulator irradiation. In the proposed structure, we achieved a higher conversion efficiency than general a - SiGe:H solar cell and a - SiC:H / a - SiGe:H hetero-junction thin film solar cells without a - Si:H buffer layer at the p/i interface. Based on results obtained from this study, we discuss the roles of a - Si:H buffer layer in a - SiC:H / a - SiGe:H hetero-junction thin film solar cells.

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

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