Photovoltaically top-performing perovskite crystal facets

Energy level modulation of TiO2 using amino trimethylene phosphonic acid for efficient perovskite solar cells with an average VOC of 1.19 V

“…The peaks located at 14.2°, 20.1°, 28.3° and 40.2° are assigned to the (100), (112), (200) and (224) crystal planes, respectively, in which (100) is the most balanced and stable plane. 37 The dominant plane is (224) for the TiO 2 based perovskite film and it shifts to (100) for perovskite deposited on the ATMP–TiO 2 substrate, indicating the optimized crystallinity of the target perovskite film which is well-consistent with the SEM analysis.…”

Unveiling facet-dependent degradation and facet engineering for stable perovskite solar cells

“…The PCE for the (111)-dominated perovskite is 23.8% with a J sc of 25.3 mA/cm 2 , a V oc of 1.15 V, and a FF of 0.82. The slightly lower J sc for the (111)-dominated perovskite is due to a photocurrent generation capability that is a little lower than that of the (100) facet (22). It is anticipated that the performance of the (111)-dominated perovskite device can be further improved with surface passivation and optimization methods.…”

“…To prepare perovskite thin films with well-defined (100) and (111) facets, piperidine additive was used (see methods) ( 22 ). X-ray diffraction (XRD) data in fig.…”

“…1A). Most of the grains have a triangular facet in the center, corresponding to the (111) facet ( 22 ), and the (100) facets are in the lateral directions of the crystal surface ( 24 ). This observation suggests that the perovskite crystal is enclosed by (100) facets, with (111) facets at the truncated corners.…”

Experimental and theoretical investigations on the anti-perovskite nitrides Co3CuN, Ni3CuN and Co3MoN for ammonia synthesis

“…For perovskite and anti-perovskite materials, it is typically the case that the most stable, and therefore most expressed, crystalline facets correspond to the low-index ( 100) and ( 111) surfaces, with the (100) facet typically being the most stable [47,48]. Hence, in the present work, we will consider these surfaces for further study.…”