Perovskite; Solar cells; Photonics; Opal-like structure; Templating
Abstract :
[en] Organic-inorganic metal halide perovskite compounds, used either in mesoscopic or planar solar cells architectures, have allowed preparing highly efficient solid-state devices (>20%).
In mesoscopic solar cells, a mesoporous TiO2 scaffold is incorporated into the cells. However, because of the small pore size compared to the wavelengths of visible light, the scaffold barely scatters light.
In this work, we propose to design periodically structured TiO2 scaffold from colloidal crystal templating fabrication method. Polystyrene beads with diameters comparable to visible light wavelengths are used as structuring agent. The resulting opal-like photonic structure will strongly interact with light and increase light harvesting.
The photoanode microstructure is characterized by scanning electron microscopy (SEM) and X-Ray diffraction (XRD). In parallel, light interaction is modeled in order to find the best compromise in terms of photonic architecture. Sunlight absorption by the solar cells is presented and discussed with dependency of pore sizes and number of opal-like layers.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Dewalque, Jennifer ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Baron, Damien ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Spronck, Gilles ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Schrijnemakers, Audrey ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Maho, Anthony ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Colson, Pierre ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Loicq, Jerôme ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Henrist, Catherine ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Language :
English
Title :
Opal-like photoanodes with photonic effects in macroporous perovskite solar cells
Publication date :
28 February 2018
Event name :
Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (ABXPV18PEROPTO)