Enhanced light-harvesting capability by phenothiazine in ruthenium sensitizers with superior photovoltaic performance

2012 ◽  
Vol 22 (1) ◽  
pp. 130-139 ◽  
Author(s):  
Jen-Fu Yin ◽  
Jian-Ging Chen ◽  
Jiann-T'suen Lin ◽  
Dibyendu Bhattacharya ◽  
Ying-Chan Hsu ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Photovoltaic Performance

Optimizing molecule-like gold clusters for light energy conversion

2016 ◽  
Vol 4 (6) ◽  
pp. 2075-2081 ◽  
Author(s):  
Kevin G. Stamplecoskie ◽  
Abigail Swint
Keyword(s):  
Excited State ◽  
Energy Conversion ◽  
Metal Clusters ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Gold Clusters ◽  
Light Energy ◽  
Light Energy Conversion

As light harvesting materials, Au18SR14 metal clusters are highlighted for their favourable excited-state properties leading to better photovoltaic performance.

scholarly journals Artificial light-harvesting n-type porphyrin for panchromatic organic photovoltaic devices

2017 ◽  
Vol 8 (7) ◽  
pp. 5095-5100 ◽  
Author(s):  
Wisnu Tantyo Hadmojo ◽  
Dajeong Yim ◽  
Havid Aqoma ◽  
Du Yeol Ryu ◽  
Tae Joo Shin ◽  
...  
Keyword(s):  
Energy Loss ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Low Energy ◽  
Organic Photovoltaic ◽  
Artificial Light ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Low Bandgap ◽  
Porphyrin Derivative

We developed a novel NIR-harvesting n-type porphyrin derivative, PDI–PZn–PDI, that shows a low bandgap of 1.27 eV. Panchromatic absorption was extended to the NIR area with a significantly low energy loss of 0.54 eV which led to promising photovoltaic performance.

Over 17.5% Efficiency Ternary Organic Solar Cells with Enhanced Photon Utilization via a Medium Band Gap Non-Fullerene Acceptor

2021 ◽  
Author(s):  
Congcong Cao ◽  
Hanjian Lai ◽  
Hui Chen ◽  
Yulin Zhu ◽  
Mingrui Pu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Organic Solar Cells ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Photocurrent Generation ◽  
Medium Band

The light harvesting and photocurrent generation from acceptors largely determine the photovoltaic performance of organic solar cells (OSCs). We have designed and prepared two medium band gap non-fullerene acceptors (NFAs),...

scholarly journals Push–pull type porphyrin based sensitizers: The effect of donor structure on the light-harvesting ability and photovoltaic performance

2015 ◽  
Vol 122 ◽  
pp. 199-205 ◽  
Author(s):  
Qingbiao Qi ◽  
Renzhi Li ◽  
Jie Luo ◽  
Bin Zheng ◽  
Kuo-Wei Huang ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Photovoltaic Performance

Engineering hollow electrodes for hybrid solar cells for efficient light harvesting and carrier collection

2016 ◽  
Vol 4 (44) ◽  
pp. 17260-17266 ◽  
Author(s):  
Peng-Fei Yin ◽  
Jing-Jing Wang ◽  
Yu-Zhu Zhou ◽  
Jing Mao ◽  
Wen-Jing Qin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Absorption ◽  
Charge Separation ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Hybrid Solar Cells ◽  
Carrier Collection

Hybrid-structured solar cells with superior light absorption, charge separation and hole transportation exhibit enhanced photovoltaic performance.

scholarly journals Enhanced light-harvesting by plasmonic hollow gold nanospheres for photovoltaic performance

2018 ◽  
Vol 5 (1) ◽  
pp. 171350 ◽  
Author(s):  
Hao Ding ◽  
Jindian Lv ◽  
Huaping Wu ◽  
Guozhong Chai ◽  
Aiping Liu
Keyword(s):  
Surface Plasmon Resonance ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Visible Region ◽  
Gold Nanospheres ◽  
Electron Hole ◽  
Hollow Gold Nanospheres ◽  
Photochemical Behaviour ◽  
Resonance Character ◽  
Energy Conversion Devices

A ‘sandwich'-structured TiO 2 NR/HGN/CdS photoanode was successfully fabricated by the electrophoretic deposition of hollow gold nanospheres (HGNs) on the surface of TiO 2 nanorods (NRs). The HGNs presented a wide surface plasmon resonance character in the visible region from 540 to 630 nm, and further acted as the scatter elements and light energy ‘antennas' to trap the local-field light near the TiO 2 NR/CdS layer, resulting in the increase of the light harvesting. An outstanding enhancement in the photochemical behaviour of TiO 2 NR/HGN/CdS photoanodes was attained by the contribution of HGNs in increasing the light absorption and the number of electron-hole pairs of photosensitive semiconductors. The optimized photochemical performance of TiO 2 NR/HGN/CdS photoanodes by using plasmonic HGNs demonstrated their potential application in energy conversion devices.

scholarly journals TiO2 Passivation Layer on ZnO Hollow Microspheres for Quantum Dots Sensitized Solar Cells with Improved Light Harvesting and Electron Collection

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 631 ◽  
Author(s):  
Zhen Li ◽  
Libo Yu ◽  
Hao Wang ◽  
Huiwen Yang ◽  
Huan Ma
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Hollow Microsphere ◽  
Hollow Microspheres ◽  
Passivation Layer ◽  
Electron Recombination ◽  
Electron Collection ◽  
Sensitized Solar Cells

Light harvesting and electron recombination are essential factors that influence photovoltaic performance of quantum dots sensitized solar cells (QDSSCs). ZnO hollow microspheres (HMS) as architectures in QDSSCs are beneficial in improving light scattering, facilitating the enhancement of light harvesting efficiency. However, this advantage is greatly weakened by defects located at the surface of ZnO HMS. Therefore, we prepared a composite hollow microsphere structure consisting of ZnO HMS coated by TiO2 layer that is obtained by immersing ZnO HMS architectures in TiCl4 aqueous solution. This TiO2-passivated ZnO HMS architecture is designed to yield good light harvesting, reduced charge recombination, and longer electron lifetime. As a result, the power conversion efficiency (PCE) of QDSSC reaches to 3.16% with an optimal thickness of TiO2 passivation layer, which is much higher when compared to 1.54% for QDSSC based on bare ZnO HMS.

scholarly journals The Size Effect of TiO2 Hollow Microspheres on Photovoltaic Performance of ZnS/CdS Quantum Dots Sensitized Solar Cell

Materials ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1583 ◽  
Author(s):  
Zhen Li ◽  
Libo Yu
Keyword(s):  
Quantum Dots ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Hollow Microspheres ◽  
Cds Quantum Dots ◽  
Strong Light ◽  
Harvesting Efficiency ◽  
Light Harvesting Efficiency

Size controllable TiO2 hollow microspheres (HMS) were synthesized by a carbonaceous spheres (CS) template method. Based on TiO2 HMS, the ZnS/CdS quantum dots (QDs) were loaded to form a ZnS/CdS@TiO2 HMS photoanode for quantum dots sensitized solar cell (QDSSC). The size effects of TiO2 HMS on photovoltaic performance were investigated, and showed that TiO2 HMS with sizes ~560 nm produced the best short-circuit current density (Jsc) of 8.02 mA cm−2 and highest power conversion efficiency (PCE) of 1.83%, showing a better photovoltaic performance than any other QDSSCs based on TiO2 HMS with size ~330 nm, ~400 nm, and ~700 nm. The improvement of photovoltaic performance based on ~560 nm TiO2 HMS which can be ascribed to the enhanced light harvesting efficiency caused by multiple light reflection and strong light scattering of TiO2 HMS. The ultraviolet-visible (UV-vis) spectra and incident photo to the current conversion efficiency (IPCE) test results confirmed that the size of TiO2 HMS has an obvious effect on light harvesting efficiency. A further application of ~560 nm TiO2 HMS in ZnS/PbS/CdS QDSSC can improve the PCE to 2.73%, showing that TiO2 HMS has wide applicability in the design of QDSSCs.

Synthesis of push–pull porphyrin with two electron-donating and two electron-withdrawing groups and its application to dye-sensitized solar cell

2015 ◽  
Vol 19 (01-03) ◽  
pp. 140-149 ◽  
Author(s):  
Tomohiro Higashino ◽  
Yamato Fujimori ◽  
Kenichi Sugiura ◽  
Yukihiro Tsuji ◽  
Seigo Ito ◽  
...  
Keyword(s):  
Rational Design ◽  
Light Harvesting ◽  
Photovoltaic Performance ◽  
Photovoltaic Properties ◽  
Dye Sensitized ◽  
Photocurrent Generation ◽  
Porphyrin Core ◽  
Anchoring Groups ◽  
First Time ◽  
Selection Of

We synthesized for the first time a push–pull porphyrin dye bearing two diarylamino groups and two carboxyphenylethynyl groups as electron-donating and electron-withdrawing anchoring groups, respectively. The absorption spectrum displayed broad and red-shifted absorption, achieving panchromic light-harvesting in visible and NIR regions. Introduction of multiple push–pull groups into meso-positions is a promising strategy for the rational design of porphyrin sensitizers for light-harvesting applications. The preliminary photovoltaic performance is moderate (3.0%), but the extensive photocurrent generation matches with the excellent light-harvesting ability. Further modulation of the photovoltaic properties of porphyrin DSSCs will be possible by suitable selection of electron-donating and electron-withdrawing groups as well as introduction of the substituents into the porphyrin core.

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