Abstracts Book - IMRC 2018

• SC4-P067
BEHAVIOR OF TiO2 MESOPOROS / TiO2 NANOTUBES HYBRID
MATERIAL LIKE ETL IN PEROVSKITE-HYBRID SOLAR CELLS.
David Meneses Rodriguez 1 , Daniel Chan Morales 2 , Karen L. Valadez 3 , Andres Fest 4 , Alma
Daniela Salazar Aguilar 4,5 , Sofia Magdalena Vega Diaz 4 , Gerko Oskam 6
1
Cátedras-CONACyT-CINVESTAV Mérida, Departamento de Física Aplicada, Mexico.
2 Universidad Autónoma de Yucatán, Facultad de Ingeniería, Mexico. 3 CINVESTAV-Mérida, Física
Aplicada, Mexico. 4 Instituto Tecnológico de Celaya, Departamento de Ingeniería Química,
Mexico. 5 Instituto Tecnológico de Celaya, , Mexico. 6 CINVESTAV-Mérida, Departamento de
Física Aplicada, Mexico.
Perovskite solar cells (PSC) have atracted great atention recently. This materials
for photovoltaics are promising because the device efficiency is expected to
further increase (22% reported until now). One major advantage of this material
is its versatility regarding device fabrication and the low cost. Despite high
power conversión efficiency (PCE), over 22% , organic-inorganic lead halide
perovskite solar cells (PSC) has been reported in recent years arising from high
absorption coefficient, hig carrier mobilities and long charge diffusion lengths.
Most os structures for the PSC are composed for electron transport layer (ETL),
perovskite absorber layer and hole trasport layer (HTL). In this work perovskite
hybrid solar cells based in organic-inorganic lead halide perovskite
(CH3NH3)PbI3, were assembled using TiO2 nanotube/TiO2 mesoporous hybrid
material like ETL under ambient conditions. We develop a metodology to obtain
TiO2 nanotubes uniformly embedded in the TiO2 mesoporous for obtain a
hybrid layer and evaluate this material like ETL in a PSC. An integral
characterization was carried out for the hybrid layer and was evaluated its
beahavior like ETL in final a structure of PSC. In the device structure we study
the transport pathways for carrier and recombination process.
Acknowledgment:
The authors are grateful to LANBIO – CINVESTAV - Mérida for characterization
through projects: FOMIX-YUCATAN, 2008-108160 and CONACYT LAB-2009-021
No. 123913, and to CONACYT: CB-256296, INFRA – 2016 - 269772 and INFRA –
2015 - 255109 for financial support .
Keywords: Perovskite, TIO2 nanotubes, ETL
Presenting authors email: david.meneses@gmail.com