Abstracts Book - IMRC 2018

• SC4-O007
EFFECT OF RAPID THERMAL PROCESSING ON CDS/CH3NH3PBI3
SOLAR CELLS
Daniel Arturo Acuna Leal 1 , Bindu Krishnan 1 , Sadasivan Shaji 1 , David Avellaneda 1 , Josue A.
Aguilar Martinez 2
1
Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica, Mexico.
2 Universidad Autónoma de Nuevo León, Centro de Investigación e Innovación en Ingeniería
Aeronáutica, Mexico.
Currently, perovskite materials for photovoltaic applications are under heavy
research originated their excellent optoelectronic properties giving outstanding
excellent photovoltaic performance. Specifically, the CH3NH3PbI3 perovskite
shows excellent photovoltaic property when implemented on solar cell
architectures using porous TiO2 and an organic hole transport layer due to its
favorable direct band gap of 1.55 eV, its long diffusion lengths and ambipolar
carrier transport property. In this work, we report preparation of photovoltaic
structures using CH3NH3PbI3 as absorber material and CdS thin films as window
layer. For this, CH3NH3PbI3 thin films were synthesized using the two-step
dipping method which involves dipping of spin coated PbI2 in methyl ammonium
iodide solution; and CdS thin films were deposited by chemical bath deposition.
We demonstrate the effect of post rapid thermal processing (RTP) on the lead
iodide thin film and thereby the resulting perovskite thin film. Our results
showed that upon an RTP, the solar cells fabricated with the structure:
glass/FTO/CdS/CH3NH3PbI3/C/Ag exhibited better photovoltaic performance, as
compared to the films without RTP. Short-current density is improved because
of the RTP. The structure, morphology and photophysical properties of the
perovskite thin films after the RTP were analyzed using different techniques
such as X-Ray diffractometry, Scanning Electron Microscopy, X-ray
Photoelectron Spectroscopy and uv-vis spectroscopy.
Acknowledgment:
The author is grateful to CONACYT for providing the doctoral fellowship, and to
CEMIESOL project number 35
Keywords: thin films, perovskite, rapid thermal processing
Presenting authors email: daniel.aleal@outlook.com