Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 42
·15321-15328
·
IF 7.393
Haonan Liu,Hongping Wu,Hongwei Yu,Zhanggui Hu,Jiyang Wang,Yicheng Wu
Designing new nonlinear optical (NLO) materials with a strong second harmonic generation (SHG) response, wide transparent range and moderate birefringence is a significant but addressable challenge. By introducing Mo6+ and Zn2+ cations into phosphates, a prospective non-centrosymmetric (NCS) phosphate, K2ZnMoP2O10, has been rationally designed. Physical property measurements indicate that K2ZnMoP2O10 exhibits a strong SHG response (∼6.8 × KDP), a moderate birefringence (0.0534@450.2 nm), a wide transparent range (0.38–4.5 μm) and a high laser-damage threshold (>910 MW cm−2). In addition, a high quality K2ZnMoP2O10 single crystal with a size of 14 × 8 × 4 mm3 has also been grown using a top-seeded solution growth method, which is the first large-size crystal of molybdophosphates reported to date. These results indicate that K2ZnMoP2O10 is a potential NLO material. The discovery of K2ZnMoP2O10 also suggests that introducing various types of NLO-active structural units is helpful for balancing the SHG response and birefringence of materials.
研究领域:
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 15
·3910-3916
·
IF 5.976
Sangen Zhao,Yi Yang,Yaoguo Shen,Xiaodong Wang,Qingran Ding,Xianfeng Li,Yanqiang Li,Lina Li,Zheshuai Lin,Junhua Luo
Few nonlinear optical (NLO) materials are available for deep-UV second-harmonic generation (SHG), limited by the fundamental requirements of the structure-directing optical properties. KBe2BO3F2 is the sole exception, but it suffers from the high toxicity of the compositional beryllium element and a serious layering growth tendency. Here, we report a beryllium-free deep-UV NLO phosphate with honeycomb-like topological structural layers, namely, CsNaMgP2O7. The phosphate exhibits an enhanced SHG response of 1.1 times that of KH2PO4, which is comparable to that of KBe2BO3F2. Based on theoretical analysis, the enhanced SHG response can be well rationalized. Meanwhile, CsNaMgP2O7 possesses a reinforced interlayer bonding of about 2.95 times that of KBe2BO3F2, which is very favorable to mitigate the layering growth tendency. This work will be helpful to better understand the structure–property relationships in deep-UV NLO materials.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Advanced Science
·
2022
·Vol. 10
·期 4
·2204755
·
IF 17.521
Shaoxin Cui,Hongping Wu,Zhanggui Hu,Jiyang Wang,Yicheng Wu,Hongwei Yu
Oxychalcogenides capable of exhibiting excellent balance among large second-harmonic generation (SHG) response, wide band gap ( E g ), and suitable birefringence (Δ n ) are ideal materials class for infrared nonlinear optical (IR NLO) crystals. However, rationally designing a new high-performance oxychalcogenide IR NLO crystal still faces a huge challenge because it requires the optimal orientations of the heteroanionic groups in oxychalcogenide. Herein, a series of antiperovskite-type oxychalcogenides, Ae 3 Q[GeOQ 3 ] (Ae = Ba, Sr; Q = S, Se), which were synthesized by employing the antiperovskite-type Ba 3 S[GeS 4 ] as the structure template. Their structures feature novel three-dimensinoal frameworks constructed by distorted [QAe 6 ] octahedra, which are further filled by [GeOQ 3 ] tetrahedra to form antiperovskite-type structures. Based on the unique antiperovskite-type structures, the favorable alignment of the polarizable [GeOQ 3 ] tetrahedra and distorted [QAe 6 ] octahedra have been achieved. These contribute the ideal combination of large SHG response (0.7–1.5 times that of AgGaS 2 ), wide E g (3.52–4.10 eV), and appropriate Δ n (0.017–0.035) in Ae 3 Q[GeOQ 3 ]. Theoretical calculations and crystal structure analyses revealed that the strong SHG and wide E g could be attributed to the polarizable [GeOQ 3 ] tetrahedra and distorted [QAe 6 ] octahedra. This research provides a new exemplification for the design of high-performance IR NLO materials.
研究领域:
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chemical Science
·
2022
·Vol. 14
·期 1
·136-142
·
IF 9.969
Xiang-Yu Zhang,Zi-Qi Zhou,Wen-Xiu Bao,Hong-Xin Tang,Rui-Biao Fu,Zu-Ju Ma,Xin-Tao Wu
Nonlinear optical (NLO) crystals featuring a strong second-harmonic generation (SHG) response and suitable birefringence to achieve phase-matching are in urgent demand in industrial and commercial applications. Based on the substitution strategy, two new NLO lead-iodide formates, K2[PbI2(HCOO)2] and Rb2[PbI2(HCOO)2], have been successfully synthesized using a moderate mixed-solvothermal method. K2[PbI2(HCOO)2] and Rb2[PbI2(HCOO)2] exhibit strong phase-matching SHG responses of 8 and 6.8 × KDP, respectively, a suitable birefringence and transparent window covering most of the visible light and mid-IR region. Crystal structures and theoretical calculations unveil that the origins of the strong SHG response and suitable birefringence can be credibly attributed to the oriented arrangement of the highly distorted [PbI2O4] hexa-coordinated polyhedra, which are consistent in their local dipole moments, as well. This research provides a new strategy to explore high-performance NLO crystals.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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