scholarly journals In-situ facile deposition of TiO2 hole blocking layers for efficient hole-conductor-free perovskite solar cells

2018 ◽  
Keyword(s):  
Solar Cells ◽  
Room Temperature ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Carbon Electrodes ◽  
Blocking Layer ◽  
Compact Layer ◽  
High Efficient ◽  
Hole Blocking Layer

A compact hole blocking layer is necessary for high efficient perovskite solar cell, which was usually fabricated by spin coating or spray pyrolysis with the followed annealing process, or vacuum deposition. Here, we deposited TiO2 compact layers by an in-situ room-temperature solvent method, which were applied as an effective hole blocking layer for hole-conductor-free perovskite solar cells with carbon electrodes. The thickness of the TiO2 compact layer can be easily regulated by the depositing time. By optimizing the TiO2 depositing time, the power conversion efficiency of hole-conductor-free perovskite solar cells was up to 10.66%.

Room-temperature processed tin oxide thin film as effective hole blocking layer for planar perovskite solar cells

2018 ◽  
Vol 434 ◽  
pp. 1336-1343 ◽  
Author(s):  
Hong Tao ◽  
Zhibin Ma ◽  
Guang Yang ◽  
Haoning Wang ◽  
Hao Long ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Tin Oxide ◽  
Room Temperature ◽  
Perovskite Solar Cells ◽  
Oxide Thin Film ◽  
Blocking Layer ◽  
Hole Blocking Layer

scholarly journals Low-Temperature Growing Anatase TiO2/SnO2 Multi-dimensional Heterojunctions at MXene Conductive Network for High-Efficient Perovskite Solar Cells

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Linsheng Huang ◽  
Xiaowen Zhou ◽  
Rui Xue ◽  
Pengfei Xu ◽  
Siliang Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Perovskite Layer ◽  
High Efficient

AbstractA multi-dimensional conductive heterojunction structure, composited by TiO2, SnO2, and Ti3C2TX MXene, is facilely designed and applied as electron transport layer in efficient and stable planar perovskite solar cells. Based on an oxygen vacancy scramble effect, the zero-dimensional anatase TiO2 quantum dots, surrounding on two-dimensional conductive Ti3C2TX sheets, are in situ rooted on three-dimensional SnO2 nanoparticles, constructing nanoscale TiO2/SnO2 heterojunctions. The fabrication is implemented in a controlled low-temperature anneal method in air and then in N2 atmospheres. With the optimal MXene content, the optical property, the crystallinity of perovskite layer, and internal interfaces are all facilitated, contributing more amount of carrier with effective and rapid transferring in device. The champion power conversion efficiency of resultant perovskite solar cells achieves 19.14%, yet that of counterpart is just 16.83%. In addition, it can also maintain almost 85% of its initial performance for more than 45 days in 30–40% humidity air; comparatively, the counterpart declines to just below 75% of its initial performance.

scholarly journals Room Temperature Processed Double Electron Transport Layers for Efficient Perovskite Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 329
Author(s):  
Wen Huang ◽  
Rui Zhang ◽  
Xuwen Xia ◽  
Parker Steichen ◽  
Nanjing Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Room Temperature ◽  
Deposition Time ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Electron Transport Layer ◽  
Double Electron

Zinc Oxide (ZnO) has been regarded as a promising electron transport layer (ETL) in perovskite solar cells (PSCs) owing to its high electron mobility. However, the acid-nonresistance of ZnO could destroy organic-inorganic hybrid halide perovskite such as methylammonium lead triiodide (MAPbI3) in PSCs, resulting in poor power conversion efficiency (PCE). It is demonstrated in this work that Nb2O5/ZnO films were deposited at room temperature with RF magnetron sputtering and were successfully used as double electron transport layers (DETL) in PSCs due to the energy band matching between Nb2O5 and MAPbI3 as well as ZnO. In addition, the insertion of Nb2O5 between ZnO and MAPbI3 facilitated the stability of the perovskite film. A systematic investigation of the ZnO deposition time on the PCE has been carried out. A deposition time of five minutes achieved a ZnO layer in the PSCs with the highest power conversion efficiency of up to 13.8%. This excellent photovoltaic property was caused by the excellent light absorption property of the high-quality perovskite film and a fast electron extraction at the perovskite/DETL interface.

scholarly journals Oblique Electrostatic Inkjet-Deposited TiO2 Electron Transport Layers for Efficient Planar Perovskite Solar Cells

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Md. Shahiduzzaman ◽  
Toshiharu Sakuma ◽  
Tetsuya Kaneko ◽  
Koji Tomita ◽  
Masao Isomura ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electron Transport ◽  
Surface Coverage ◽  
Low Cost ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Important Advance ◽  
Compact Layer ◽  
Conversion Efficiencies ◽  
First Time

AbstractIn this study, a new, simple, and novel oblique electrostatic inkjet (OEI) technique is developed to deposit a titanium oxide (TiO2) compact layer (CL) on fluorine-doped tin oxide (FTO) substrate without the need for a vacuum environment for the first time. The TiO2 is used as electron transport layers (ETL) in planar perovskite solar cells (PSCs). This bottom-up OEI technique enables the control of the surface morphology and thickness of the TiO2 CL by simply manipulating the coating time. The OEI-fabricated TiO2 is characterized tested and the results are compared with that of TiO2 CLs produced by spin-coating and spray pyrolysis. The OEI-deposited TiO2 CL exhibits satisfactory surface coverage and smooth morphology, conducive for the ETLs in PSCs. The power-conversion efficiencies of PSCs with OEI-deposited TiO2 CL as the ETL were as high as 13.19%. Therefore, the present study provides an important advance in the effort to develop simple, low-cost, and easily scaled-up techniques. OEI may be a new candidate for depositing TiO2 CL ETLs for highly efficient planar PSCs, thus potentially contributing to future mass production.

scholarly journals Polymer/Fullerene Blend Solar Cells with Cadmium Sulfide Thin Film as an Alternative Hole-Blocking Layer

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 460 ◽  
Author(s):  
Murugathas Thanihaichelvan ◽  
Selvadurai Loheeswaran ◽  
Kailasapathy Balashangar ◽  
Dhayalan Velauthapillai ◽  
Punniamoorthy Ravirajan
Keyword(s):  
Solar Cells ◽  
Cadmium Sulfide ◽  
Layer Thickness ◽  
Short Circuit ◽  
Power Conversion ◽  
Acid Methyl Ester ◽  
Short Circuit Current ◽  
Charge Recombination ◽  
Blocking Layer ◽  
Hole Blocking Layer

In this work, chemical bath-deposited cadmium sulfide (CdS) thin films were employed as an alternative hole-blocking layer for inverted poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) bulk heterojunction solar cells. CdS films were deposited by chemical bath deposition and their thicknesses were successfully controlled by tailoring the deposition time. The influence of the CdS layer thickness on the performance of P3HT:PCBM solar cells was systematically studied. The short circuit current densities and power conversion efficiencies of P3HT:PCBM solar cells strongly increased until the thickness of the CdS layer was increased to ~70 nm. This was attributed to the suppression of the interfacial charge recombination by the CdS layer, which is consistent with the lower dark current found with the increased CdS layer thickness. A further increase of the CdS layer thickness resulted in a lower short circuit current density due to strong absorption of the CdS layer as evidenced by UV-Vis optical studies. Both the fill factor and open circuit voltage of the solar cells with a CdS layer thickness less than ~50 nm were comparatively lower, and this could be attributed to the effect of pin holes in the CdS film, which reduces the series resistance and increases the charge recombination. Under AM 1.5 illumination (100 mW/cm2) conditions, the optimized PCBM:P3HT solar cells with a chemical bath deposited a CdS layer of thickness 70 nm and showed 50% power conversion efficiency enhancement, in comparison with similar solar cells with optimized dense TiO2 of 50 nm thickness prepared by spray pyrolysis.

Zinc oxide as a hole blocking layer for perovskite solar cells deposited in atmospheric conditions

RSC Advances ◽  
2016 ◽  
Vol 6 (72) ◽  
pp. 67715-67723 ◽  
Author(s):  
Warda Hadouchi ◽  
Jean Rousset ◽  
Denis Tondelier ◽  
Bernard Geffroy ◽  
Yvan Bonnassieux
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Blocking Layer ◽  
Zno Thin Film ◽  
Atmospheric Conditions ◽  
Hole Blocking Layer ◽  
Reverse Scan ◽  
Electron Extraction

A sputtered ZnO thin film was used as electron extraction layer, in a planar perovskite based solar cell. As a result a maximum power conversion efficiency (PCE) of 14.2%, measured at reverse scan, has been demonstrated.

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