Improving the performance of perovskite solar cells via TiO2 electron transport layer prepared by direct current pulsed magnetron sputtering

Zhang, Xin; Zhang, Yi; Wang, Yukai; Wang, Qizhen; Liu, Zhihui; Geng, Rui; Wang, Hualin; Jiang, Weiwei; Ding, Wanyu

doi:10.1016/j.jallcom.2022.167278

Cited by 8 publications

(6 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They extract the electrons from perovskite and block the holes to electrodes. Although numerous electron transport materials (such as TiO 2 [4,5], ZnO [6,7], and C61-butyric acid methyl ester [8,9]) have been investigated, TiO 2 remains an important component in high-performance PSCs. However, TiO 2 has limited electron mobility, restricting PSCs performance improvement [10].…”

Section: Introductionmentioning

confidence: 99%

A simple strategy to obtain graphitic carbon nitride modified TiO₂ layer for efficient perovskite solar cells

Guo,

Zhao,

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

The power conversion efficiency (PCE) of perovskite solar cells (PSCs) can be improved through the concurrent strategies of enhancing charge transfer and passivating defects. Graphite carbon nitride (g-C3N4) has been demonstrated as a promising modifier for optimizing energy level alignment and reducing defect density in PSCs. However, its preparation process can be complicated. A simple one-step calcination approach was used in this study to prepare g-C3N4-modified TiO2 via the incorporation of urea into the TiO2 precursor. This modification simultaneously tunes the energy level alignment and passivates interface defects. The comprehensive research confirms that the addition of moderate amounts of g-C3N4 to TiO2 results in an ideal alignment of energy levels with perovskite, thereby enhancing the ability to separate and transfer charges. Additionally, the g-C3N4-modified perovskite films exhibit an increase in grain size and crystallinity, which reduces intrinsic defects density and extends charge recombination time. Therefore, the g-C3N4-modified PSC achieves a champion PCE of 20.00%, higher than that of the control PSC (17.15%). Our study provides a systematic comprehension of the interfacial engineering strategy and offers new insights into the development of high-performance PSCs.

show abstract

Section: Introductionmentioning

confidence: 99%

A simple strategy to obtain graphitic carbon nitride modified TiO₂ layer for efficient perovskite solar cells

Guo,

Zhao,

et al. 2023

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…Tian et al fabricated a composite TiO 2 ETL using a mixed spray pyrolysis method, demonstrating that TiO 2 nanoparticles can promote the charge extraction process at the TiO 2 /perovskite interfaces and improve the recombination process in perovskite layers [ 16 ]. Very recently, magnetron sputtering technology on FTO glass was also used to fabricate different thicknesses and shapes of TiO 2 ETL for PSC [ 17 , 18 ]. Electron beam (EB) evaporation of TiO 2 has emerged as a promising and cost-effective approach for large-scale production of perovskite solar cells (PSCs) [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Boosting the Performance of Perovskite Solar Cells through Systematic Investigation of the Annealing Effect of E-Beam Evaporated TiO2

Xue

Chen

et al. 2023

Micromachines

View full text Add to dashboard Cite

Electron transport layer (ETL) plays an undeniable role in improving the performance of n-i-p planar perovskite solar cells (PSCs). Titanium dioxide (TiO2) is known as a promising ETL material for perovskite solar cell. In this work, the effect of annealing temperature on optical, electrical, and surface morphology of the electron-beam (EB)-evaporated TiO2 ETL, and consequently on the performance of perovskite solar cell, was investigated. It was found that annealing treatment at an optimized temperature of 480 °C considerably improved the surface smoothness, density of grain boundaries, and carrier mobility of TiO2 film, which resulted in nearly 10-fold improvement in power conversion efficiency (11.16%) in comparison with the unannealed device (1.08%). The improvement in performance of the optimized PSC is attributed to the acceleration of charge carrier extraction, as well as suppression of the recombination at the ETL/Perovskite interface.

show abstract

“…Yet another application of TiO 2 and Cu x O can be found in the context of perovskite solar cells [ 50 , 51 , 52 , 53 , 54 , 55 , 56 ]. TiO 2 is used as an electron transport layer (ETL), while Cu x O is used as a hole transport layer (HTL).…”

Section: Introductionmentioning

confidence: 99%

Formation and Characterization of Stable TiO2/CuxO-Based Solar Cells

Wisz,

Sawicka-Chudy,

Sibiński

et al. 2023

Materials

View full text Add to dashboard Cite

According to increasing demand for energy, PV cells seem to be one of the best answers for human needs. Considering features such as availability, low production costs, high stability, etc., metal oxide semiconductors (MOS) are a focus of attention for many scientists. Amongst MOS, TiO2 and CuxO seem to be promising materials for obtaining an effective photoconversion effect. In this paper, specific investigation, aimed at the manufacturing of the complete photovoltaic structure based on this concept is described in detail. A set of samples manufactured by DC magnetron sputtering, with various process parameters, is characterized by morphology comparison, layer structure and material composition investigation, and finally by the obtained photovoltaic parameters. Based on SEM studies, it was established that the films are deposited uniformly and complete their formation; without clearly defined faces, the conglomerates of the film grow individually. These are areas with a uniform structure and orientation of atoms. The sizes of conglomerates are in a normal direction range from 20 to 530 nm and increase with film thickness. The film thickness was in the range from 318 to 1654 nm, respectively. The I-V study confirms the photovoltaic behavior of thin film solar cells. The open-circuit voltage (Voc) and short-circuit current density (Jsc) values of the photovoltaic devices ranged from 1.5 to 300 mV and from 0.45 to 7.26 µA/cm3, respectively, which corresponds to the maximum efficiency at the level of 0.01%. Specific analysis of the junction operation on the basis of characteristics flow, Rs, and Rsh values is delivered.

show abstract

Improving the performance of perovskite solar cells via TiO2 electron transport layer prepared by direct current pulsed magnetron sputtering

Cited by 8 publications

References 49 publications

A simple strategy to obtain graphitic carbon nitride modified TiO₂ layer for efficient perovskite solar cells

A simple strategy to obtain graphitic carbon nitride modified TiO₂ layer for efficient perovskite solar cells

Boosting the Performance of Perovskite Solar Cells through Systematic Investigation of the Annealing Effect of E-Beam Evaporated TiO2

Formation and Characterization of Stable TiO2/CuxO-Based Solar Cells

Contact Info

Product

Resources

About

Improving the performance of perovskite solar cells via TiO2 electron transport layer prepared by direct current pulsed magnetron sputtering

Cited by 8 publications

References 49 publications

A simple strategy to obtain graphitic carbon nitride modified TiO2 layer for efficient perovskite solar cells

A simple strategy to obtain graphitic carbon nitride modified TiO2 layer for efficient perovskite solar cells

Boosting the Performance of Perovskite Solar Cells through Systematic Investigation of the Annealing Effect of E-Beam Evaporated TiO2

Formation and Characterization of Stable TiO2/CuxO-Based Solar Cells

Contact Info

Product

Resources

About

A simple strategy to obtain graphitic carbon nitride modified TiO₂ layer for efficient perovskite solar cells

A simple strategy to obtain graphitic carbon nitride modified TiO₂ layer for efficient perovskite solar cells