scholarly journals Manipulating the Crystallization Kinetics by Additive Engineering toward High‐Efficient Photovoltaic Performance

2021 ◽  
pp. 2009103
Author(s):  
Jingnan Song ◽  
Qin Hu ◽  
Quanzeng Zhang ◽  
Shaobing Xiong ◽  
Zhe Zhao ◽  
...  
Keyword(s):  
Crystallization Kinetics ◽  
Photovoltaic Performance ◽  
High Efficient

Acetate-Based Crystallization Kinetics Modulation of CsPbI2Br for Improved Photovoltaic Performance

2019 ◽  
Vol 3 (1) ◽  
pp. 658-665 ◽  
Author(s):  
Linfeng Ye ◽  
Hongyue Wang ◽  
Yang Wei ◽  
Pengfei Guo ◽  
Xiaokun Yang ◽  
...  
Keyword(s):  
Crystallization Kinetics ◽  
Photovoltaic Performance

scholarly journals Substitution of Ethynyl-Thiophene Chromophores on Ruthenium Sensitizers: Influence on Thermal and Photovoltaic Performance of Dye-Sensitized Solar Cells

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Malapaka Chandrasekharam ◽  
Ganugula Rajkumar ◽  
Thogiti Suresh ◽  
Paidi Yella Reddy
Keyword(s):  
Extinction Coefficient ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Molar Extinction Coefficient ◽  
Visible Range ◽  
High Efficient ◽  
Conversion Efficiencies

A new high molar extinction coefficient ruthenium(II) bipyridyl complex, “Ru(2,2-bipyridine-4,4′-dicarboxylic acid)(4,4′-bis((3-hexylthiophen-2-yl)ethynyl)-2,2′-bipyridine)(NCS)2 (N(C4H9)4), MC101” was synthesized and fully characterized by 1H-NMR, ESI-MASS, FT-IR, UV-Vis., and fluorescence spectroscopes. The dye showed relatively high molar extinction coefficient of 25.0 × 103 M-1 cm-1 at λ maximum of 544 nm, while the reference C101 has shown 15.8 × 103 M-1cm-1 at λ maximum 528 nm. The monochromatic incident photon-to-collected electron conversion efficiency of 44.1% was obtained for MC101 over the entire visible range, while the C101 sensitized solar cell fabricated and evaluated under identical conditions exhibited 40.1%. The DSSCs fabricated with 0.54 cm2 active area TiO2 electrodes and high efficient electrolyte (E01), from the sensitizers MC101 and C101 exhibited energy conversion efficiencies of 3.25% (short-circuit current density (JSC) = 7.32 mA/cm2, VOC = 610 mV, ff = 0.725) and 2.94% (JSC = 6.60 mA/cm2; VOC = 630 mV; ff = 0.709), respectively, under air mass of 1.5 sunlight.

Development and Construction of Domestic High-Efficient Small-Capacity Power Equipmen

Vestnik MEI ◽  
2018 ◽  
Vol 6 (6) ◽  
pp. 33-42
Author(s):  
Pavel V. Roslyakov ◽  
◽  
Bronislav G. Grisha ◽  
Igor L. Ionkin ◽  
Mikhail N. Zaichenko ◽  
...  
Keyword(s):  
High Efficient ◽  
Small Capacity

Ultrathin Carbon Nanosheets for Highly-efficient Capacitive K-ion and Zn-ion Storage

2020 ◽  
Author(s):  
Yamin Zhang ◽  
Zhongpu Wang ◽  
Deping Li ◽  
Qing Sun ◽  
Kangrong Lai ◽  
...  
Keyword(s):  
Energy Storage ◽  
Porous Carbon ◽  
Metal Ion ◽  
Rate Capability ◽  
Energy Storage Devices ◽  
Capacity Retention ◽  
Carbon Nanosheets ◽  
Storage Devices ◽  
High Efficient ◽  
Ion Storage

<p></p><p>Porous carbon has attracted extensive attentions as the electrode material for various energy storage devices considering its advantages like high theoretical capacitance/capacity, high conductivity, low cost and earth abundant inherence. However, there still exists some disadvantages limiting its further applications, such as the tedious fabrication process, limited metal-ion transport kinetics and undesired structure deformation at harsh electrochemical conditions. Herein, we report a facile strategy, with calcium gluconate firstly reported as the carbon source, to fabricate ultrathin porous carbon nanosheets. <a>The as-prepared Ca-900 electrode delivers excellent K-ion storage performance including high reversible capacity (430.7 mAh g<sup>-1</sup>), superior rate capability (154.8 mAh g<sup>-1</sup> at an ultrahigh current density of 5.0 A g<sup>-1</sup>) and ultra-stable long-term cycling stability (a high capacity retention ratio of ~81.2% after 4000 cycles at 1.0 A g<sup>-1</sup>). </a>Similarly, when being applied in Zn-ion capacitors, the Ca-900 electrode also exhibits an ultra-stable cycling performance with ~90.9% capacity retention after 4000 cycles at 1.0 A g<sup>-1</sup>, illuminating the applicable potentials. Moreover, the origin of the fast and smooth metal-ion storage is also revealed by carefully designed consecutive CV measurements. Overall, considering the facile preparation strategy, unique structure, application flexibility and in-depth mechanism investigations, this work will deepen the fundamental understandings and boost the commercialization of high-efficient energy storage devices like potassium-ion/sodium-ion batteries, zinc-ion batteries/capacitors and aluminum-ion batteries.</p><br><p></p>

Doped Metal Oxide Nanocrystals for Solution-Processed Hole Extraction Layers in High Efficient Organic Solar Cells

2018 ◽  
Author(s):  
Riva Alkarsifi ◽  
Florent Pourcin ◽  
Pavlo Perkhun ◽  
Mats Fahlman ◽  
Christine Videlot-Ackermann ◽  
...  
Keyword(s):  
Solar Cells ◽  
Metal Oxide ◽  
Organic Solar Cells ◽  
Solution Processed ◽  
High Efficient
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