Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar Cells
Impacto
Scholar |
Otros documentos de la autoría: Juarez-Perez, Emilio J.; S. Sánchez, Rafael; Badia Bou, Laura; Garcia-Belmonte, Germà; Kang, Yong Soo; Mora-Sero, Ivan; Bisquert, Juan
Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
comunitat-uji-handle4:
INVESTIGACIONEste recurso está restringido
http://dx.doi.org/10.1021/jz5011169 |
Metadatos
Título
Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar CellsAutoría
Fecha de publicación
2014-06Editor
American Chemical SocietyCita bibliográfica
JUAREZ-PEREZ, Emilio J., et al. Photoinduced giant dielectric constant in lead halide perovskite solar cells. The Journal of Physical Chemistry Letters, 2014, 5.13: 2390-2394.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://pubs.acs.org/doi/abs/10.1021/jz5011169Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
Organic-inorganic lead trihalide perovskites have emerged as an outstanding photovoltaic material that demonstrated a high 17.9% conversion efficiency of sunlight to electricity in a short time. We have found a giant ... [+]
Organic-inorganic lead trihalide perovskites have emerged as an outstanding photovoltaic material that demonstrated a high 17.9% conversion efficiency of sunlight to electricity in a short time. We have found a giant dielectric constant (GDC) phenomenon in these materials consisting on a low frequency dielectric constant in the dark of the order of ε0 = 1000. We also found an unprecedented behavior in which ε0 further increases under illumination or by charge injection at applied bias. We observe that ε0 increases nearly linearly with the illumination intensity up to an additional factor 1000 under 1 sun. Measurement of a variety of samples of different morphologies, compositions, and different types of contacts shows that the GDC is an intrinsic property of MAPbX3 (MA = CH3NH3 +). We hypothesize that the large dielectric response is induced by structural fluctuations. Photoinduced carriers modify the local unit cell equilibrium and change the polarizability, assisted by the freedom of rotation of MA. The study opens a way for the understanding of a key aspect of the photovoltaic operation of high efficiency perovskite solar cells. [-]
Publicado en
J. Phys. Chem. Lett., 2014, 5 (13)Derechos de acceso
© 2014 American Chemical Society
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
Aparece en las colecciones
- FCA_Articles [511]