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Volume 6, Issue 4 (Suppl)
J Material Sci Eng, an open access journal
ISSN: 2169-0022
Materials Congress 2017
June 12-14, 2017
June 12-14, 2017 Rome, Italy
Materials Science and Engineering
9
th
World Congress on
Optoelectronic studies on hybrid perovskites films for solar cells applications
M Solis de la Fuente, S Coria Monroy
and
Ting Zhang
Lawrence Berkeley National Laboratory, USA
N
ovel materials have been developed for overcoming the challenge of solar cells with low cost and high efficiency. Recently hybrid
perovskites ABX
3
[A=CH
3
NH
3
+
, CH=CHNH
3
+
; B= Pb
+2
, Sn
+2
; X=I
-2
] solar cells have reached high power conversion efficiencies
i.e. above 20% using simple manufacture methods and low temperature deposition, which have generated great interest in scientific-
technological areas for the commercialization. Perovskites solar cells (PSCs) could compete respect to silicon technologies however
present critical issues in thermal stability under external factors (moisture, light-oxygen, heat) as well as lack of reproducibility in
fabrication methods. This work is focused on structural- optoelectronic studies on CH
3
NH
3
PbI
3
to understand the interface influence
on the degradation process. The CH
3
NH
3
PbI
3
films were realized by one-step spin coating and characterized by X-ray diffraction
and photoluminescence PL. The films showed a smooth surface with excellent cover on glass and high PL like have been reported
in previous works. We prepared solar cells (ITO/PEDOT:SS/CH
3
NH
3
PbI
3
/PCBM/Al) and measured current-voltage (J-V) and
electrochemical impedance spectroscopy (EIS). Important differences were observed in rapid and low process (frequency) when the
devices were put under illumination before IS measurements. Significant structural changes were observed by XRD. Optical studies
reveal degradation mechanisms, which they are going to discuss.
Biography
M Solis de la Fuente has done his PhD from UNAM Mexico. He is currently a Post-doctoral student at LBNL, California, United States. His areas of interest
are renewable energy, solar cells, light emitting diodes (LEDs), metallic oxide and semiconductor quantum dot synthesis, optoelectronic characterization hybrid
perovskites, and thin films growth.
mauricio@lbl.govM Solis de la Fuente et al., J Material Sci Eng 2017, 6:4(Suppl)
DOI: 10.4172/2169-0022-C1-068