No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
is not pyroelectric, excluding ferroelectric-enhanced photovoltaic performance
S. De Wolf, J. Holovsky, S.-J. Moon, P. Löper, B. Niesen, M. Ledinsky, F.-J. Haug, J.-H. Yum, and C. Ballif, J. Phys. Chem. Lett. 5, 1035 (2014).
A. Miyata, A. Mitioglu, P. Plochocka, O. Portugall, J. T.-W. Wang, S. D. Stranks, H. J. Snaith, and R. J. Nicholas, Nat. Phys. 11, 582 (2015).
D. Shi, V. Adinolfi, R. Comin, M. Yuan, E. Alarousu, A. Buin, Y. Chen, S. Hoogland, A. Rothenberger, K. Katsiev, Y. Losovyj, X. Zhang, P. A. Dowben, O. F. Mohammed, E. H. Sargent, and O. M. Bakr, Science 347, 519 (2015).
See supplementary material at http://dx.doi.org/10.1063/1.4949760
for operational voltage losses with respect to Shockley-Queisser limit (Figure S1); illustration of the relation between ferroelectricity, pyroelectricity and piezoelectricity, among all 32 classes of dielectric crystals (Figure S2); XPS elemental analysis of MAPbBr3
single-crystal (100) surface (Table SI); images and dimensions of examined MAPbBr3
crystals (Figure S3(a)) and the work-function position of a polished crystal and the different deposited electrodes (Figure S3(b)); schematic illustration of the Chynoweth measurement setup (Figure S4(a)) and examples for pyroelectric signals coming from an LiTaO3
single crystal under similar conditions to those MAPbBr3
was measured (Figures S4(b)-S4(d)); low frequency (1 Hz) measurement of MAPbBr3
crystal sample with lead electrodes (Figure S5); impedance spectroscopy and resistivity results of MAPbBr3
crystals in ambient air at different temperatures (Figure S6).[Supplementary Material]
R. W. Boyd, in Nonlinear Optics, 3rd ed. (Elsevier/Academic Press, Amsterdam, 2008), Chap.1.
Z. Fan, J. Xiao, K. Sun, L. Chen, Y. Hu, J. Ouyang, K. P. Ong, K. Zeng, and J. Wang, J. Phys. Chem. Lett. 6, 1155 (2015).
C. C. Stoumpos, L. Frazer, D. J. Clark, Y. S. Kim, S. H. Rhim, A. J. Freeman, J. B. Ketterson, J. I. Jang, and M. G. Kanatzidis, J. Am. Chem. Soc. 137, 6804 (2015).
S. Piperno, E. Mirzadeh, E. Mishuk, D. Ehre, S. Cohen, M. Eisenstein, M. Lahav, and I. Lubomirsky, Angew. Chem., Int. Ed. 52, 6513 (2013).
S. M. Sze and K. K. Ng, in Physics of Semiconductor Devices, 3rd ed. (Wiley-Interscience, Hoboken, NJ, 2007), Chap. 3.
Article metrics loading...
To experimentally (dis)prove ferroelectric
effects on the properties of lead-halide perovskites and of solar cells, based on them, we used second-harmonic-generation spectroscopy and the periodic temperature change (Chynoweth) technique to detect the polar nature of methylammonium lead bromide (MAPbBr3). We find that MAPbBr3 is probably centrosymmetric and definitely non-polar; thus, it cannot be ferroelectric. Whenever pyroelectric-like signals were detected, they could be shown to be due to trapped charges, likely at the interface between the metal electrode and the MAPbBr3 semiconductor. These results indicate that the ferroelectric
effects do not affect steady-state performance of MAPbBr3
Full text loading...
Most read this month