The influence of helium dielectric barrier discharge jet (Dbdjet) plasma treatment on bathocuproine (bcp) in p-i-n-structure perovskite solar cells
Journal
Polymers
Journal Volume
13
Journal Issue
22
Date Issued
2021
Author(s)
Abstract
A bathocuproine (BCP) layer is typically used as the hole-blocking layer in p-i-n-structure perovskite solar cells (PSCs) between PC61BM and Ag electrodes. Before evaporating the Ag, we used a low-temperature (<40 °C) atmospheric-pressure dielectric barrier discharge jet (DBDjet) to treat the BCP with different scan rates. The main purpose of this was to change the contact resistance between the BCP layer and the Ag electrodes through surface modification using a DBDjet. The best power conversion efficiency (PCE) of 13.11% was achieved at a DBDjet scan rate of 2 cm/s. The He DBDjet treatment introduced nitrogen to form C?N bonds and create pits on the BCP layer. This deteriorated the interface between the BCP and the follow-up deposited-Ag top electrode. Compared to the device without the plasma treatment on the BCP layer, the He DBDjet treatment on the BCP layer reduced photocurrent hysteresis but deteriorated the fill factor and the efficiency of the PSCs. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Subjects
Atmospheric-pressure plasma
Conductive polymer
Dielectric barrier discharge
Non-thermal plasma
Perovskite solar cell
Atmospheric pressure
Dielectric devices
Dielectric materials
Efficiency
Electric discharges
Electrodes
Helium
Perovskite
Perovskite solar cells
Plasma applications
Silver
Temperature
Ag electrode
Atmospheric pressure plasmas
Bathocuproine
Conductive Polymer
Dielectric barrier discharges
Nonthermal plasma
P-i-n structure
PIN structures
Plasma treatment
Scan rates
Flow control
SDGs
Type
journal article