Laser fabricated carbon quantum dots in anti-solvent for highly efficient carbon-based perovskite solar cells

2021 ◽  
Author(s):  
Shuhan Li ◽  
Yang Li ◽  
Ke Liu ◽  
Mengwei Chen ◽  
Weidong Peng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Carbon Quantum Dots ◽  
Highly Efficient ◽  
Carbon Based

Passivation of the grain boundaries of CH3NH3PbI3 using carbon quantum dots for highly efficient perovskite solar cells with excellent environmental stability

Nanoscale ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 115-124 ◽  
Author(s):  
Qiang Guo ◽  
Fanglong Yuan ◽  
Bing Zhang ◽  
Shijie Zhou ◽  
Jin Zhang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Grain Boundaries ◽  
Perovskite Solar Cells ◽  
Carbon Quantum Dots ◽  
Environmental Stability ◽  
Carbon Quantum Dot ◽  
Highly Efficient

Passivation of the grain boundaries of CH3NH3PbI3 by bonding with a carbon quantum dot additive for efficient perovskite solar cells with excellent environmental stability.

scholarly journals Effects of CsSnxPb1−xI3 Quantum Dots as Interfacial Layer on Photovoltaic Performance of Carbon-Based Perovskite Solar Cells

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Chi Zhang ◽  
Zhiyuan He ◽  
Xuanhui Luo ◽  
Rangwei Meng ◽  
Mengwei Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Photogenerated Electron ◽  
Depletion Region ◽  
Band Alignment ◽  
Back Surface ◽  
The One ◽  
Carbon Based

AbstractIn this work, inorganic tin-doped perovskite quantum dots (PQDs) are incorporated into carbon-based perovskite solar cells (PSCs) to improve their photovoltaic performance. On the one hand, by controlling the content of Sn2+ doping, the energy level of the tin-doped PQDs can be adjusted, to realize optimized band alignment and enhanced separation of photogenerated electron–hole pairs. On the other hand, the incorporation of tin-doped PQDs provided with a relatively high acceptor concentration due to the self-p-type doping effect is able to reduce the width of the depletion region near the back surface of the perovskite, thereby enhancing the hole extraction. Particularly, after the addition of CsSn0.2Pb0.8I3 quantum dots (QDs), improvement of the power conversion efficiency (PCE) from 12.80 to 14.22% can be obtained, in comparison with the pristine device. Moreover, the experimental results are analyzed through the simulation of the one-dimensional perovskite/tin-doped PQDs heterojunction.

scholarly journals PMMA Thin Film with Embedded Carbon Quantum Dots for Post-Fabrication Improvement of Light Harvesting in Perovskite Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 291 ◽  
Author(s):  
Askar A. Maxim ◽  
Shynggys N. Sadyk ◽  
Damir Aidarkhanov ◽  
Charles Surya ◽  
Annie Ng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Fill Factor ◽  
Light Harvesting ◽  
Incident Light ◽  
Perovskite Solar Cells ◽  
Carbon Quantum Dots ◽  
Active Layers ◽  
Before And After ◽  
Down Conversion

Perovskite solar cells (PSCs) with a standard sandwich structure suffer from optical transmission losses due to the substrate and its active layers. Developing strategies for compensating for the losses in light harvesting is of significant importance to achieving a further enhancement in device efficiencies. In this work, the down-conversion effect of carbon quantum dots (CQDs) was employed to convert the UV fraction of the incident light into visible light. For this, thin films of poly(methyl methacrylate) with embedded carbon quantum dots (CQD@PMMA) were deposited on the illumination side of PSCs. Analysis of the device performances before and after application of CQD@PMMA photoactive functional film on PSCs revealed that the devices with the coating showed an improved photocurrent and fill factor, resulting in higher device efficiency.

Efficient and stable planar perovskite solar cells with carbon quantum dots-doped PCBM electron transport layer

2019 ◽  
Vol 43 (18) ◽  
pp. 7130-7135 ◽  
Author(s):  
Xiaomeng Zhu ◽  
Jing Sun ◽  
Shuai Yuan ◽  
Ning Li ◽  
Zhiwen Qiu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Perovskite Solar Cells ◽  
Carbon Quantum Dots ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Electron Transporting Layer

The solar cell with carbon QDs-doped PCBM as its electron transporting layer shows the highest PCE of 18.1%.

scholarly journals Highly efficient and stable inverted perovskite solar cells using down-shifting quantum dots as a light management layer and moisture-assisted film growth

2019 ◽  
Vol 7 (24) ◽  
pp. 14753-14760 ◽  
Author(s):  
Mohammad Mahdi Tavakoli ◽  
Hadi Tavakoli Dastjerdi ◽  
Daniel Prochowicz ◽  
Pankaj Yadav ◽  
Rouhollah Tavakoli ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Film Growth ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Highly Efficient ◽  
Light Management

Down-shifting QDs together with moisture-assisted film growth enable a highly efficient and stable inverted perovskite solar cell with efficiency of over 20%.

Laser induced core-shell liquid metal quantum dots for high-efficiency carbon-based perovskite solar cells

2021 ◽  
pp. 150470
Author(s):  
Shuhan Li ◽  
Yang Li ◽  
Ke Liu ◽  
Mengwei Chen ◽  
Weidong Peng ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Liquid Metal ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Core Shell ◽  
Carbon Based
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