33 / 48
Page 89
conferenceseries
.com
November 13-15, 2017 | Las Vegas, USA
14
th
International Conference and Exhibition on
Materials Science and Engineering
RRJOMS | Volume 5 | Issue 7 | November, 2017
Analysis and characterization of perovskite solar cells effected by film thickness of CH
3
NH
3
PbI
3-x
Cl
x
Layer
Dong Hoon Cho, Kyung Hwan Kim
and
Hyung Wook Choi
Gachon University, Korea
Introduction:
At present, the photovoltaic market is dominated by solar cells made of crystalline silicon. However, even in light of
the major decrease in the price of crystalline silicon, the high production and installation costs lead to long payback times in most
regions, decreasing the economic feasibility of widespread use. As such, there has been a concerted effort to find a cheaper alternative
to silicon solar cells.
Abstract:
Recently, a new class of hybrid organic halide perovskite was introduced as light harvesting material, showing strong
absorption in a broad region of the visible spectrum, good electron and hole conductivity, delivering also high open circuit voltages
in photovoltaic devices. The perovskite absorber was initially used as the sensitizer to replace dye molecules in the dye-sensitized solar
cell by using the liquid of iodide-based electrolyte. The solution-based device fabrication in solid-state perovskite solar cell (PSC) is
very attractive advantage of manufacturing compared with other solar cell. PSCs are consist of CH
3
NH
3
PbX
3
loaded on a mesoporous
TiO
2
layer in conjunction with the hole transporting material between the two electrodes.
The PSCs based on CH
3
NH
3
PbX
3
thin films processed by various methods show quite different device performances. High power
conversion efficiency was observed from PSCs based on high quality deposited CH
3
NH
3
PbX
3
thin films. Moderate power conversion
efficiency was observed from PSCs based on low quality solution-processed CH
3
NH
3
PbI
3
−
x
Cl
x
layer.
In this study, we studied the correlations between the efficiencies of PSCs and the film thicknesses of CH
3
NH
3
PbI
3−x
Cl
x
layers. We
investigate the device performance of X-ray diffraction (XRD) patterns, atomic force microscopy (AFM) and scanning electron
microscopy (SEM) images of CH
3
NH
3
PbI
3
−xClx films. The incident photocurrent conversion efficiency was measured using a solar
simulator (100 mW/cm
2
).
chw@gachon.ac.krRes. Rev. J Mat. Sci. 2017, 5:7
DOI: 10.4172/2321-6212-C1-012