Abstracts Book - IMRC 2018

• SC4-P035
HYBRID PEROVSKITES FOR SOLAR CELLS APPLICATIONS
Christian Selene Coria Monroy 1 , Mauricio Solis de la Fuente 2
1 Lawrence Berkeley National Laboratory, Inorganic Nanostructures Facility, United States.
2 Lawrence Berkeley National Laboratory, Energy Technologies, United States.
Renewable energy is reaching a competitive level with fossil fuels and among
the new promising materials in photovoltaic research are perovskites, with a rise
in power conversion efficiency over 20% in experimental devices since the
publication of the fist paper in 2009. The Perovskite photovoltaic devices are
easy to process solution technologies for solar energy generation. Perovskites
Solar Cells (PSC), are promising materials but innovation is needed to address
the issue of thermal stability under external factors such as moisture, light,
oxygen and heat, being the main obstacles towards its commercialization.
Progress have been made in the synthesis of methyl ammonium lead perovskite
solar cells and lead free perovskites with tin, where homogeneous films have
been implemented in working solar cells with 10% efficiency. The photovoltaic
devices have the inverted solar cell structure with ITO as substrate, PEDOT:PSS
as blocking layer, the perovskite as electron transport layer and PCBM as hole
transport layer and aluminum as contact. The perovskite films were analyzed in
morphology, composition and film homogeneity, grain size, photoluminescence
quenching, (XRD, TEM, SEM, AFM and XPS). The solar cells were studied in its
current-voltage characteristics, hysteresis and quantum efficiency. We have
measured the thermoelectrical properties of the perovskites, conductivity and
Seebeck coefficient, and progress is being made in the analysis of the stability
and ageing of devices and perovskite films.
Acknowledgment:
All studies were carried out at the Molecular Foundry the Lawrence Berkeley
National Laboratory. Work at the Molecular Foundry was supported by the US
Deparment of Energy (DOE) and the SENER-Conacyt Energy Sustentability Fund,
Mexico.
Keywords: Perovskites, solar cells, photovoltaic devices
Presenting authors email: corimone@yahoo.com.mx