One-Pot Large-Scale Synthesis of Carbon Quantum Dots: Efficient Cathode Interlayers for Polymer Solar Cells

2017 ◽  
Vol 9 (17) ◽  
pp. 14953-14959 ◽  
Author(s):  
Yuzhao Yang ◽  
Xiaofeng Lin ◽  
Wenlang Li ◽  
Jiemei Ou ◽  
Zhongke Yuan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Large Scale ◽  
Polymer Solar Cells ◽  
Carbon Quantum Dots ◽  
One Pot ◽  
Large Scale Synthesis

Rapid Conversion from Carbohydrates to Large-Scale Carbon Quantum Dots for All-Weather Solar Cells

ACS Nano ◽  
2017 ◽  
Vol 11 (2) ◽  
pp. 1540-1547 ◽  
Author(s):  
Qunwei Tang ◽  
Wanlu Zhu ◽  
Benlin He ◽  
Peizhi Yang
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Large Scale ◽  
Carbon Quantum Dots ◽  
Rapid Conversion

scholarly journals Environment-dependent Emission Tuning in the Multicolor Nitrogen-doped Carbon Quantum Dots

2021 ◽  
Author(s):  
Dineshkumar Sengottuvelu ◽  
Abdul Kalam Shaik ◽  
Satish Mishra ◽  
Mahsa Abbaszadeh ◽  
Nathan Hammer ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Large Scale ◽  
Low Cost ◽  
Visible Region ◽  
Carbon Quantum Dots ◽  
One Pot ◽  
Nitrogen Doped ◽  
Emission Changes ◽  
Nitrogen Doped Carbon

Carbon quantum dots (CQDs) are fascinating luminous materials from the carbonaceous family and are increasingly being investigated in many optoelectronic applications due to their unique photoluminescence (PL) characteristics. Herein, we report the synthesis of nitrogen-doped carbon quantum dots (NCQDs) from citric acid and m-phenylenediamine using a one-pot hydrothermal approach. The environment-dependent emission changes of NCQDs were extensively investigated in various solvents, in solid-state, and in physically assembled PMMA-PnBA-PMMA copolymer gels in 2-ethyl hexanol. The NCQDs display bright emission in various solvents as well as in solid-state and a temperature-dependent enhanced emission in gels. In detail, these NCQDs exhibit multicolor PL emission across the visible region and its enhancement upon changing the environment (solutions and polymer matrices). The NCQDs also exhibit excitation-dependent PL and solvatochromism, which are rarely observed in CQDs. Most CQDs are non-emissive in the aggregated or solid-state due to the aggregation-caused quenching (ACQ) effect, limiting their solid-state applications. However, these NCQDs display a strong solid-state emission centered at 568 nm ascribed to the presence of abundant surface functional groups, which helps to prevent the - interaction between the NCQDs and to overcome the ACQ effect in the solid-state. Interestingly, the NCQD containing gels display a significant fluorescence enhancement than the NCQDs in 2-ethyl hexanol solution because of the interaction between the polar PMMA blocks and NCQDs. This research opens up the development of large-scale, low-cost multicolor phosphor for the fabrication of optoelectronic devices, sensing, and bioimaging applications.

Dual-interface modification effect of Carbon Quantum Dots on the performance of Polymer Solar Cells

2019 ◽  
Vol 30 (12) ◽  
pp. 11063-11069
Author(s):  
Jianan Wang ◽  
Hairong Li ◽  
Qi Lei ◽  
Fangzhi Chang ◽  
Wenhao Fan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Polymer Solar Cells ◽  
Carbon Quantum Dots ◽  
Interface Modification ◽  
Modification Effect ◽  
Dual Interface

One-pot, large-scale synthesis silica-encapsulated NIR alloy quantum dots CdSeTe within short time

2014 ◽  
Vol 16 (6) ◽  
Author(s):  
Cuiling Ren ◽  
Haosen Yuan ◽  
Yifang Yang ◽  
Hongli Chen ◽  
Yonglei Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Large Scale ◽  
One Pot ◽  
Large Scale Synthesis ◽  
Alloy Quantum Dots ◽  
Short Time

Improving charge transport property and energy transfer with carbon quantum dots in inverted polymer solar cells

2014 ◽  
Vol 105 (7) ◽  
pp. 073306 ◽  
Author(s):  
Chunyu Liu ◽  
Kaiwen Chang ◽  
Wenbin Guo ◽  
Hao Li ◽  
Liang Shen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Transfer ◽  
Solar Cells ◽  
Charge Transport ◽  
Transport Property ◽  
Polymer Solar Cells ◽  
Carbon Quantum Dots ◽  
Charge Transport Property ◽  
Inverted Polymer Solar Cells

One-Pot Large-Scale Synthesis of Robust Ultrafine Silica-Hybridized CdTe Quantum Dots

2010 ◽  
Vol 2 (4) ◽  
pp. 1211-1219 ◽  
Author(s):  
Li Zhou ◽  
Chao Gao ◽  
Xiaozhen Hu ◽  
Weijian Xu
Keyword(s):  
Quantum Dots ◽  
Large Scale ◽  
Cdte Quantum Dots ◽  
One Pot ◽  
Ultrafine Silica ◽  
Large Scale Synthesis

scholarly journals Precise Surface State Control of Carbon Quantum Dots to Enhance Charge Extraction for Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 460
Author(s):  
Qiming Yang ◽  
Wen Yang ◽  
Yong Zhang ◽  
Wen Ge ◽  
Xin Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Carbon Quantum Dots ◽  
One Pot ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-sensitized solar cells are regarded as promising candidates to resolve the energy and environmental issues in recent years, arising from their solution-processable fabrication technology and high power conversion efficiency. However, there are still several problems regarding how to accelerate the development of this type of photovoltaics, including the limited light-harvesting ability and high-production cost of molecular dye. In the current work, we have systematically studied the role of nitrogen-doped carbon quantum dots (N-CQDs) as co-sensitizers in traditional dye sensitized solar cells. A series of N-CQDs have been prepared by employing chitosan as a precursor via one-pot hydrothermal technology for various times, demonstrating a maximized efficiency as high as 0.089% for an only N-CQDs-based device. Moreover, the co-sensitized solar cell based on N719 dye (C58H86N8O8RuS2) and optimized N-CQDs shows significantly enhanced performance, yielding a solar-to-electric conversion efficiency of up to 9.15% under one standard sun (AM 1.5G) irradiation, which is much higher than the 8.5%-efficiency of the controlled device without N-CQDs. The matched characteristics of energy level, excellent up-convention, and FRET (Förster resonance energy transfer) abilities of N-CQDs are responsible for their improved power conversion efficiency.

Solution-Processable ZnO/Carbon Quantum Dots Electron Extraction Layer for Highly Efficient Polymer Solar Cells

2018 ◽  
Vol 10 (5) ◽  
pp. 4895-4903 ◽  
Author(s):  
Ruqin Zhang ◽  
Min Zhao ◽  
Zhongqiang Wang ◽  
Zongtao Wang ◽  
Bo Zhao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Polymer Solar Cells ◽  
Carbon Quantum Dots ◽  
Highly Efficient ◽  
Solution Processable ◽  
Electron Extraction

Large-scale synthesis of N-doped carbon quantum dots and their phosphorescence properties in a polyurethane matrix

Nanoscale ◽  
2016 ◽  
Vol 8 (8) ◽  
pp. 4742-4747 ◽  
Author(s):  
Jing Tan ◽  
Rui Zou ◽  
Jie Zhang ◽  
Wang Li ◽  
Liqun Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Large Scale ◽  
Carbon Quantum Dots ◽  
Large Scale Synthesis ◽  
Polyurethane Matrix
Sign in / Sign up

Export Citation Format

Share Document