EU PVSEC Programme Online
EU PVSEC 2021, 6 - 10 September 2021
Presentation: 3BV.1.12 Development of an Organic Mixed Tin-Lead Bromide Rich Perovskite for Tandem Application
Type: Visual
Date: Tuesday, 7th September 2021
08:30 - 10:00
Author(s): M. Kozolinsky, T. Hildebrandt, F. Donsanti, J. Rousset, F. Rousseau
Presenter / Speaker: M. Kozolinsky, EDF R&D, Palaiseau, France
Event: Conference Conference
Session: 3BV.1 Perovskite Solar Cells and Modules
Topic: 3. 1 Perovskites
Summary / Abstract: For the past years, perovskites have demonstrated their tremendous potential as solar cells reaching up to 25.5% [1] yield as a single cell, when the Shockley-Queisser limit is around 30.5%[2]. To overpass this limit, much attention is now paid on silicon/perovskite devices which could allow yields as high as 42% [3] with an appropriate perovskite band gap of 1.7 eV. The great versatility of perovskite allows a facile modification of its band gap by changing its elemental composition. The engineered perovskite can be used for solar application provided that the Goldschmidt factor is between 0.9 and 1[4]. In addition, a second limiting phenomena appears to be the halide ratio, as for bromide content above 20%, a segregation of phases can be observed [5]. Taking these two limitations into consideration, the band gap of halide perovskite can hardly surpass 1.6 eV. A possible alternative route could be the substitution of a fraction of lead by tin as any perovskite with methyl ammonium, lead, tin, iodine and chlorine results in a stable photoactive perovskite.