Charge-transfer induced multifunctional BCP:Ag complexes for semi-transparent perovskite solar cells with a record fill factor of 80.1%

2021 ◽  
Author(s):  
Zhiqin Ying ◽  
Xi Yang ◽  
Jingming Zheng ◽  
Yudong Zhu ◽  
Jingwei Xiu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Buffer Layer ◽  
Fill Factor ◽  
Perovskite Solar Cells ◽  
A Charge

A charge-transfer induced BCP:Ag complex is employed as a multifunctional buffer layer for efficient inverted semi-transparent perovskite solar cells.

scholarly journals Effect of guanidinium chloride in eliminating O2− electron extraction barrier on a SnO2 surface to enhance the efficiency of perovskite solar cells

RSC Advances ◽  
2020 ◽  
Vol 10 (33) ◽  
pp. 19513-19520 ◽  
Author(s):  
Miao Yu ◽  
Lijia Chen ◽  
Guannan Li ◽  
Cunyun Xu ◽  
Chuanyao Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Power Conversion Efficiency ◽  
Fill Factor ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Oxygen Species ◽  
Guanidinium Chloride ◽  
Adsorbed Oxygen Species ◽  
Electron Extraction

The charge transfer hindrance of adsorbed oxygen species on SnO2 is successfully reduced by modifying it with guanidinium chloride, improving the power conversion efficiency from 15.33% to 18.46% (after modification) with maximum fill factor of 80%.

Improved fill factor in inverted planar perovskite solar cells with zirconium acetate as the hole-and-ion-blocking layer

2018 ◽  
Vol 20 (11) ◽  
pp. 7395-7400 ◽  
Author(s):  
Xuewen Zhang ◽  
Chunjun Liang ◽  
Mengjie Sun ◽  
Huimin Zhang ◽  
Chao Ji ◽  
...  
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Fill Factor ◽  
Perovskite Solar Cells ◽  
Blocking Layer ◽  
Zirconium Acetate

The fill factor of inverted planar perovskite solar cells was increased when using zirconium acetate as the buffer layer due to its hole-and-ion blocking ability.

scholarly journals Efficient All-Inorganic CsPbBr3 Perovskite Solar Cells by Using CdS/CdSe/CdS Quantum Dots as Intermediate Layers

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Shibing Zou ◽  
Feng Li
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Intermediate Layer ◽  
Perovskite Solar Cells ◽  
Trap States ◽  
Inorganic Perovskite ◽  
Intermediate Layers ◽  
Charge Transfer Rate ◽  
Cdse Layer ◽  
A Charge

Highly efficient all-inorganic perovskite solar cells require a fast charge transfer from CsPbBr3 to TiO2 to reduce the recombination from trap states. Herein, we insert a CdS/CdSe/CdS quantum dot (QD) layer between the TiO2 and CsPbBr3 layers to fabricate all-inorganic perovskite solar cells. By tuning the thicknesses of the CdSe layer of CdS/CdSe/CdS QDs, the conduction band (CB) levels can be adjusted to -3.72~-3.87 eV. After inserting the QD intermediate layer, the energy offset between the CB of TiO2 and CsPbBr3 is reduced, thus leading to a charge transfer rate boost from 0.040×109 to 0.059×109 s−1. The power conversion efficiency (PCE) of the solar cell with QD intermediate layer achieves 8.64%, which is 20% higher than its counterpart without QDs.

Hysteresis-free multi-walled carbon nanotube-based perovskite solar cells with a high fill factor

2015 ◽  
Vol 3 (48) ◽  
pp. 24226-24231 ◽  
Author(s):  
Zhanhua Wei ◽  
Haining Chen ◽  
Keyou Yan ◽  
Xiaoli Zheng ◽  
Shihe Yang
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cells ◽  
Charge Transfer ◽  
Fill Factor ◽  
Perovskite Solar Cells ◽  
Multi Walled Carbon Nanotube ◽  
Multi Walled Carbon Nanotubes ◽  
High Fill Factor ◽  
Walled Carbon Nanotubes ◽  
Work Up

Multi-walled carbon nanotubes enable fast charge transfer in perovskite solar cells and work up a high fill factor.

20.7% highly reproducible inverted planar perovskite solar cells with enhanced fill factor and eliminated hysteresis

2019 ◽  
Vol 12 (5) ◽  
pp. 1622-1633 ◽  
Author(s):  
Xixia Liu ◽  
Yuanhang Cheng ◽  
Chao Liu ◽  
Tianxiang Zhang ◽  
Nengduo Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Fill Factor ◽  
Perovskite Solar Cells ◽  
Highly Efficient ◽  
Hydrophilic Group ◽  
Improved Stability

The approach of a hydrophilic group grafted buffer layer (HGGBL) was investigated for perovskite growth to realize highly efficient inverted planar perovskite solar cells with superior reproducibility, negligible hysteresis and improved stability.

Microcrystalline (Si,Ge):H Solar Cells

2003 ◽  
Vol 762 ◽  
Author(s):  
Jianhua Zhu ◽  
Vikram L. Dalal
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Quantum Efficiency ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Defect Density ◽  
Cell Structure ◽  
Open Circuit ◽  
Base Layer ◽  
Ecr Plasma

AbstractWe report on the growth and properties of microcrystalline Si:H and (Si,Ge):H solar cells on stainless steel substrates. The solar cells were grown using a remote, low pressure ECR plasma system. In order to crystallize (Si,Ge), much higher hydrogen dilution (∼40:1) had to be used compared to the case for mc-Si:H, where a dilution of 10:1 was adequate for crystallization. The solar cell structure was of the p+nn+ type, with light entering the p+ layer. It was found that it was advantageous to use a thin a-Si:H buffer layer at the back of the cells in order to reduce shunt density and improve the performance of the cells. A graded gap buffer layer was used at the p+n interface so as to improve the open-circuit voltage and fill factor. The open circuit voltage and fill factor decreased as the Ge content increased. Quantum efficiency measurements indicated that the device was indeed microcrystalline and followed the absorption characteristics of crystalline ( Si,Ge). As the Ge content increased, quantum efficiency in the infrared increased. X-ray measurements of films indicated grain sizes of ∼ 10nm. EDAX measurements were used to measure the Ge content in the films and devices. Capacitance measurements at low frequencies ( ~100 Hz and 1 kHz) indicated that the base layer was indeed behaving as a crystalline material, with classical C(V) curves. The defect density varied between 1x1016 to 2x1017/cm3, with higher defects indicated as the Ge concentration increased.

p ‐Type Charge Transfer Doping of Graphene Oxide with (NiCo) 1− y Fe y O x for Air‐Stable, All‐Inorganic CsPbIBr 2 Perovskite Solar Cells

2021 ◽  
Vol 60 (19) ◽  
pp. 10608-10613
Author(s):  
Jian Du ◽  
Jialong Duan ◽  
Xiya Yang ◽  
Yanyan Duan ◽  
Quanzhu Zhou ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solar Cells ◽  
Charge Transfer ◽  
Perovskite Solar Cells ◽  
P Type
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