2023
DOI: 10.1002/adom.202202700
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Resonant Second Harmonic Generation in Proline Hybrid Lead Halide Perovskites

Abstract: Chiral hybrid organic−inorganic perovskites (HOIPs) with intrinsic noncentrosymmetry have shown great potentials for chiroptoelectronic applications including second‐order nonlinear optics (NLO). Ideal NLO materials should simultaneously feature a large NLO coefficient, wide optical transparency, high laser damage threshold, and physicochemical stability. However, the development of applicable second‐order NLO materials has been largely restricted due to their strict requirement on structural noncentrosymmetry… Show more

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Cited by 23 publications
(11 citation statements)
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“…The Pb-Br bond lengths for Pro-PbBr 3 are lower than Pb-I bond lengths for (D-/L-pro)PbI 3 •H 2 O which range from 3.16 Å to 3.30 Å. 49 The cis-Br-Pb-Br bond angles around the Pb(1) centre are distributed in the range of 82.11(5)-105.12(6)°v ersus 78.42(6)-101.41 (7)°around the Pb(2) centre, as opposed to the ideal value of 90°(Table S3 †).…”
Section: Structural Description Of Pro-pbbrmentioning
confidence: 78%
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“…The Pb-Br bond lengths for Pro-PbBr 3 are lower than Pb-I bond lengths for (D-/L-pro)PbI 3 •H 2 O which range from 3.16 Å to 3.30 Å. 49 The cis-Br-Pb-Br bond angles around the Pb(1) centre are distributed in the range of 82.11(5)-105.12(6)°v ersus 78.42(6)-101.41 (7)°around the Pb(2) centre, as opposed to the ideal value of 90°(Table S3 †).…”
Section: Structural Description Of Pro-pbbrmentioning
confidence: 78%
“…This compound is isostructural to the recently reported ( d -/ l -pro)PbI 3 ·H 2 O hybrid perovskite. 49 The primary crystallographic data for this compound are listed in Table 1. At the asymmetric unit of Pro-PbBr 3 , there are two crystallographically independent Pb 2+ ions, six halogen anions, two proline molecules in their cationic form and two water molecules (Fig.…”
Section: Resultsmentioning
confidence: 99%
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“…All 11 chiral point groups are second-harmonic generation (SHG) active except for 422 ( D 4 ), 622 ( D 6 ), and 432 ( O ). For instance, Bu et al reported that ( D -, L -Proline)­PbI 3 ·H 2 O with resonance-enhanced second-harmonic generation. In the SHG effect with temperature dependence, as temperature changes, SHG interchanges between active and inactive, making it potentially useful in smart switches. Despite the great advances in chiral hybrid materials, chiral materials with both SHG switching and double dielectric switching have rarely been reported.…”
Section: Introductionmentioning
confidence: 99%