Efficiency enhancement of inverted organic solar cells by introducing PFDTBT quantum dots into PCDTBT:PC71BM active layer

2014 ◽  
Vol 15 (10) ◽  
pp. 2632-2638 ◽  
Author(s):  
Chunyu Liu ◽  
Wenbin Guo ◽  
Huimin Jiang ◽  
Liang Shen ◽  
Shengping Ruan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Efficiency Enhancement

Heterojunction solar cells with improved power conversion efficiency using graphene quantum dots

RSC Advances ◽  
2016 ◽  
Vol 6 (112) ◽  
pp. 110493-110498 ◽  
Author(s):  
Yang Dang ◽  
Xinyang Zhang ◽  
Xin Chen ◽  
Bonan Kang ◽  
S. Ravi P. Silva
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Hydrothermal Method ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Graphene Quantum Dots ◽  
Heterojunction Solar Cells

The effect of incorporating graphene quantum dots (GQDs) synthesized by a hydrothermal method in the active layer of organic solar cells was investigated.

Application of Reduced Graphene Oxide and Graphene Quantum Dots in PTB7:PC71BM Polymer Solar Cells

2018 ◽  
Vol 768 ◽  
pp. 114-118 ◽  
Author(s):  
Xiao Chen ◽  
Lu Ting Yan
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Solar Cells ◽  
Reduced Graphene Oxide ◽  
Active Layer ◽  
Polymer Solar Cells ◽  
Graphene Quantum Dots ◽  
Electron Transport Layer ◽  
Efficiency Enhancement ◽  
Reduced Graphene

Graphene has many advantages such as high optical transmittance, low resistance, adjustable work function and stable physical and chemical properties. Graphene quantum dots (GQDs) have unique optical properties and excellent electronic conductivity. GQDs can effectively prolong the lifetime of carriers and increase the quantum yield. In this study, reduced graphene oxide (RGO) solution was prepared by ultrasonic method, and GQDs were prepared by one-step hydrothermal reaction which used graphene oxide slurry as raw material. The particle size of GQDs is 8~10 nm. Incorporation of RGO and GQDs into the active layer or the electron transport layer (ETL) resulted in good efficiency enhancement of the performance of ZnO-based inverted PTB7:PC71BM polymer solar cells (PSCs). The photoelectric conversion efficiency (PCE) of the PSCs is up to 3.89% when the doping amount of RGO is 10 wt. %. Addition of GQDs to active layer resulted in 8% efficiency enhancement from 3.20% to 3.46%. Addition of GQDs to ZnO ETL led to a more remarkable 25% efficiency enhancement, and PCE reached 4.02%. The Au NPs and GQDs co-doping in ZnO ETL caused a synergistic effect in improving the photovoltaic performance, producing a PCE of 4.23%, which is a 32.19% enhancement with respect to a pure ZnO ETL based device.

Efficiency enhancement of solution-processed inverted organic solar cells with a carbon-nanotube-doped active layer

2015 ◽  
Vol 55 (1S) ◽  
pp. 01AE06 ◽  
Author(s):  
Wen-Kai Lin ◽  
Shui-Hsiang Su ◽  
Meng-Cheng Yeh ◽  
Yang-Chan Huang ◽  
Meiso Yokoyama
Keyword(s):  
Solar Cells ◽  
Carbon Nanotube ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Efficiency Enhancement ◽  
Solution Processed

Efficiency enhancement of organic solar cells by inserting PbS quantum dots film as the infrared absorption layer

2017 ◽  
Vol 187 ◽  
pp. 136-139 ◽  
Author(s):  
Haowei Wang ◽  
Weile Li ◽  
Yueli Huang ◽  
Yishan Wang ◽  
Shengyi Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Infrared Absorption ◽  
Organic Solar Cells ◽  
Efficiency Enhancement ◽  
Absorption Layer ◽  
Pbs Quantum Dots

Achieving Efficient Organic Solar Cells via Synergistically Doping Active Layer and Interface by A Conjugated Macrocycle

2021 ◽  
Author(s):  
Yan Wang ◽  
Yi Zhang ◽  
Tong Shan ◽  
Qingyun Wei ◽  
Zhenchuang Xu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Device Optimization ◽  
Hole Transporting

To facilitate the device optimization of organic solar cells, a conjugated macrocycle namely cyanostar is firstly utilized to simultaneously modify the active layer and hole transporting layer. Benefiting from the...

Vertically Optimized Phase Separation with Improved Exciton Diffusion Enables High-Efficiency Organic Solar Cells with Thick Active Layers

2021 ◽  
Author(s):  
Yanming Sun ◽  
Yunhao Cai ◽  
Qian Li ◽  
Guanyu Lu ◽  
Hwa Sook Ryu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Phase Separation ◽  
Active Layer ◽  
Organic Solar Cells ◽  
High Efficiency ◽  
Diffusion Length ◽  
Active Layer Thickness ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Active Layers

Abstract The development of high-performance organic solar cells (OSCs) with thick active layers is of crucial importance for the roll-to-roll printing of large-area solar panels. Unfortunately, increasing the active layer thickness usually results in a significant reduction in efficiency. Herein, we fabricated efficient thick-film OSCs with an active layer consisting of one polymer donor and two non-fullerene acceptors. The two acceptors were found to possess enlarged exciton diffusion length in the mixed phase, which is beneficial to exciton generation and dissociation. Additionally, layer by layer approach was employed to optimize the vertical phase separation. Benefiting from the synergetic effects of enlarged exciton diffusion length and graded vertical phase separation, a record high efficiency of 17.31% (certified value of 16.9%) was obtained for the 300 nm-thick OSC, with an unprecedented short-circuit current density of 28.36 mA cm−2, and a high fill factor of 73.0%. Moreover, the device with an active layer thickness of 500 nm also shows a record efficiency of 15.21%. This work provides new insights into the fabrication of high-efficiency OSCs with thick active layers.

Efficient Hole Transfer via CsPbBr3 Quantum Dots Doping toward High‐performance Organic Solar Cells

Solar RRL ◽  
2021 ◽  
Author(s):  
Weiqiang Miao ◽  
Chuanhang Guo ◽  
Donghui Li ◽  
Teng Li ◽  
Pang Wang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Hole Transfer ◽  
Cspbbr3 Quantum Dots
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