Dielectric barrier discharge jet processed TiO2nanoparticle layer for flexible perovskite solar cells
Journal
Journal of Physics D: Applied Physics
Journal Volume
55
Journal Issue
3
Date Issued
2022
Author(s)
Mallela M.S
Tsai J.-H
Huang J.-Z
Hsu C.-C
Chen M.-H
Wu C.-I
Chen J.-Z
Abstract
For attaining good-performance perovskite solar cells (PSCs), the carrier collection from the perovskite material to the transport layer plays a prominent role; herein, we demonstrate an atmospheric pressure plasma treatment technique to enhance the interface properties between the active perovskite layer and electron transport layer (ETL). A scan-mode low-temperature helium dielectric barrier discharge (DBD) jet is applied to process the TiO2 nanoparticle layers for the flexible n-i-p PSCs made on ITO-coated polyethylene naphthalate substrates. When the surface of TiO2 nanoparticle ETL is treated by the DBD jet at a scan rate of 2 cm s-1 and scan height of 5 cm by ten times, the photoelectrical conversion efficiency of the cell is enhanced from 12.30% to 13.66%. The performance improvement can be attributed to the increase of hydrophilic O-C = O functional groups on the surface of the TiO2 nanoparticle layer and the reduction of charge transfer resistance of the cell revealed by x-ray photoelectron spectroscopy and electrochemical impedance spectroscopy, respectively. The results show that the low-temperature DBD jet treatment is a promising technique for processing flexible photovoltaic devices. ? 2021 IOP Publishing Ltd.
Subjects
atmospheric pressure plasma
dielectric barrier discharge
flexible perovskite solar cell
TiO2nanoparticle
Atmospheric pressure
Charge transfer
Dielectric devices
Electric discharges
Electrochemical impedance spectroscopy
Electron transport properties
Flow control
High-k dielectric
Perovskite
Perovskite solar cells
Plasma applications
Plasma jets
Temperature
TiO2 nanoparticles
X ray photoelectron spectroscopy
Atmospheric pressure plasmas
Dielectric barrier discharges
Discharge jet
Electron transport layers
Flexible perovskite solar cell
Lows-temperatures
Nanoparticle layers
Performance
TiO2 nano-particles
Titanium dioxide
SDGs
Type
journal article