Advanced Optical Materials
·
2023
·
IF 9
Bohui Xu,Pifu Gong,Fan Liu,Xingyu Zhang,Hao Huo,Zheshuai Lin
The search for new ultraviolet (UV) or deep-UV nonlinear optical (NLO) crystals would greatly prompt the development of laser science and technology. As the NLO performance of these crystals is mainly determined by the anionic groups, herein the (SO 3 CF 3 ) − group is highlighted as a promising non-π-conjugated NLO-active motif with excellent deep-ultraviolet (DUV) transmission and good NLO properties. First-principles studies reveal that this group possesses the largest HUMO-LOMO gap among the (SO 4 ) 2− -based units, as well as a relatively large NLO response. The further experiments demonstrate that the CsSO 3 CF 3 compound containing the (SO 3 CF 3 ) − motif exhibits th UV cutoff edge below 200 nm and an NLO effect ≈0.8× KH 2 PO 4 , confirming the potentials of this new motif for UV and DUV NLO applications.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Hanyu Xu,Yanling Wei,Rong Wang,Guiying Liang,Tianqi Sheng,Zuoling Fu
The cesium-based fluoride Cs 3 YF 6 has increasingly attracted curiosity due to its potential in up-conversion luminescence applications, signifying a possible revolutionary change in the next generation of lanthanide-doped luminescent functional materials. However, the nature of the photoluminescence process involving Cs 3 YF 6 has still not been studied in detail. Developing Cs 3 YF 6 luminescence applications is an intricate endeavor. Herein, we present the optimal doping concentration required for Eu 3+ and Tb 3+ doping in Cs 3 YF 6 . Meanwhile, by spectra analyses and theoretical model simulations, we have been able to decipher the intricacies of the energy transfer interaction that transpires between Tb 3+ and Eu 3+ ions. Furthermore, a water-sensitive fluorescence response system tailored for anti-counterfeiting applications was designed, which relied on the superior luminescence characteristics of Cs 3 YF 6 doped with Tb 3+ /Eu 3+ under excitation at 254 nm, whilst simultaneously exploiting the easily deliquescent nature of Cs 3 YF 6 . This work not only enhances the understanding of Cs 3 YF 6 materials in the field of rare-earth luminescence but also introduces a novel anti-counterfeiting strategy, that propels the development of applications for rare-earth-doped fluoride materials.
研究领域:
材料科学
·
光学
·
稀土发光材料
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DOI
高影响因子
Optical Materials Express
·
2019
·Vol. 9
·期 9
·3835-3842
·
IF 2.673
Xianshun Lv,Xianshun Lv,Xianshun Lv,Ping Wang,Huajian Yu,Huajian Yu,Yanyan Hu,Yanyan Hu,Huadi Zhang,Huadi Zhang,Chengcheng Qiu,Chengcheng Qiu,Jing Li,Jing Li,Jing Li,Xuping Wang,Xuping Wang,Bing Liu,Bing Liu,Yuanyuan Zhang,Yuanyuan Zhang,Yuanyuan Zhang
A colorless crystal of Ba2Mg(BO3)2 about 37 × 25 × 17 mm3 has been grown successfully by the Kyropoulos method. Thermal analyses results show that Ba2Mg(BO3)2 melts congruently. The phase purity of the raw materials and the grown crystals were confirmed by powder X-ray diffraction. Ba2Mg(BO3)2 exhibits a low UV cutoff of 187 nm and high transmittance below 3000 nm. The refractive indices of the crystal have been measured and the the least-squares fitting method was used to obtain the Sellmeier dispersion equations. The results indicate that Ba2Mg(BO3)2 is a potential birefringence crystal with large birefringence of 0.10422 at 546 nm.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2025
·
IF 4.3
Hongmei Bi
Trimethoxy(octadecyl)silane (TODS) was self-assembled on the surface of conductive indium tin oxide (ITO) substrates, and a patterned substrate with distinct hydrophilic and hydrophobic regions was constructed via deep ultraviolet (UV) light (254 nm) etching. The effect of this patterned substrate on lipid vesicle (LV) formation was investigated by using electroformation. Experimental results demonstrated that fluorescence-labeled LVs exhibited bright and dark regions corresponding to the mask design. Specifically, the UV-etched areas were hydrophilic, showing a high fluorescence intensity and a dense population of LVs. In contrast, the unetched regions coated with TODS remained hydrophobic, exhibiting low fluorescence intensity and minimal or no vesicle formation. The presence of bright and dark regions on the substrate, along with the distribution and localization of LVs in these regions, was systematically analyzed. Additionally, the reasons for the varying degrees of vesicle formation within the same dark region were discussed. Through precise surface modification and controlled patterning, it is anticipated that localized formation and spatial regulation of LVs can be achieved.
研究领域:
生物物理学
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材料科学
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细胞工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Yanhui Zhang,Wenjuan Ma,Yun Yang,Xifa Long,Zhi Su
It remains a significant hurdle for discovering birefringent materials in the deep ultraviolet (DUV, λ < 200 nm). It is well-known that the OH anions are recognized for their capability to eliminate the dangling bonds from terminal oxygen atoms, promoting the ultraviolet (UV) cutoff edge blueshift and regulating the crystal structure. Here, two new barium hydroxyborates, Ba3B11O18(OH)3(H2O) (BaBOH) and Na2BaB10O16(OH)2(H2O)2 (NaBaBOH), were designed and synthesized while displaying different dimensions. Remarkably, BaBOH presents novel one-dimensional (1D) [B22O37(OH)6]∞ double-chains formed by a new fundamental building block (FBB)[B11O21(OH)3]. NaBaBOH possesses a 2D [B10O16(OH)2]∞ layer with a less common FBB [B10O19(OH)2]. They enrich the structural diversity of hydroxyborates. Moreover, NaBaBOH exhibits a broad transparent window within the DUV spectral range (<190 nm) and possesses a favorable birefringence of 0.064. Furthermore, detailed summaries and structural comparisons have been implemented for all hydroxyborates containing alkali and alkaline-earth metals. This reveals that the OH group modulation strategy can be appropriately employed for the structural design.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Materials
·
2022
·Vol. 65
·期 9
·2585-2590
·
IF 8.64
Chen Zilong,Zeng Hao,Chu Dongdong,Zhang Fangfang,Cheng Meng,Yang Zhihua,Pan Shilie
A new deep-ultraviolet (DUV) birefringent crystal, LiB 5 O 5 F 2 (OH) 4 (LBOFH), was designed and synthesized by a high-temperature solution method. Its structure features a [B 5 O 5 F 2 (OH) 4 ] anionic group that is constructed by four π-conjugated units, i.e., two [BO 3 ] units and two [BO(OH) 2 ] units connected by the [BO 2 F 2 ] unit, which forms a near-coplanar configuration. The group exhibits large anisotropic polarizability and highest unoccupied molecular orbital-lowest unoccupied molecular orbital (HUMO-LUMO) gap, thus providing a good balance between the large birefringence (0.124 at 546 nm) and band gap (7.99 eV) in LBOFH. This work suggests new possibilities for the design and fabrication of advanced DUV birefringent crystals using the novel anionic group and the expansion of their alternative system with new hydroxyfluorooxoborates.
研究领域:
材料科学
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晶体学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·
IF 6.1
Cheng Chen,Danyang Dou,Yunjie Bai,Bingbing Zhang,Ying Wang
The investigation of birefringent materials is predominantly focused on π-conjugated systems; however, a large band gap or deep ultraviolet (DUV) transmittance cannot be guaranteed. In this work, we propose an extended π-conjugated strategy to increase the birefringence while keeping the large band gap. In the scheme, two new fluoroaluminoborates, BaAlB3O6F2 and BaAl2(B3O6)2F2, are synthesized by combining the [BO3] group with the [AlO4F2] group and the [B3O6] group with the [AlO3F] group through a rational structural design. The experimental results indicate that both BaAlB3O6F2 and BaAl2(B3O6)2F2 exhibit shorter UV cutoff wavelengths (<200 nm) and larger birefringence (Δn > 0.07@546 nm). Notably, this is a new finding in the Ba–Al–B–O–F system since the discovery of the well-known nonlinear optical crystal BaAlBO3F2. In comparison with BaAlBO3F2, BaAlB3O6F2 and BaAl2(B3O6)2F2 exhibit a markedly elevated birefringence (0.0418 vs. 0.087/0.105 at 546 nm). Furthermore, BaAl2(B3O6)2F2 exhibits the largest band gap (7.87 eV) of all known F-containing aluminoborates. This work not only identifies two potential DUV birefringent materials, but also proposes a novel design approach for reconciling the conflicting properties between birefringence and bandgap.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xinhong Zhao,Yu Tao,Jixiang Dong,Yongchu Fang,Xiaoxian Song,Zaoxue Yan
Wearable, portable, and biocompatible optoelectronic devices made of all-green and abundant materials and fabricated by low-temperature solution method are the key point in the development of next generation of intelligent optoelectronics. However, this is usually limited by the weaknesses of mono-component materials, such as non-adjustable photoresponse region, high carrier recombination rate, high signal-to-noise ratio, as well as the weak mechanical flexibility of bulk films. In this work, the Cs3Cu2I5/ZnO heterostructure flexible photodetectors were constructed by a low-temperature solution method combined with spin-coating technique. The heterostructure combines the low dark current and strong deep ultraviolet absorption of Cs3Cu2I5 quantum dots with the high carrier mobility of ZnO quantum dots as well as the efficient charge separation of the vertical p–n junction, to improve the photodetection performance. The heterostructure shows enhanced light/dark current ratio and ultraviolet-to-visible rejection ratios. Under an illumination of 280 nm light, an optical detectivity as high as 1.26 × 1011 Jones was obtained; the optical responsivity and response time are much better than those of control devices. After 300 times of 180° bending cycles, the photocurrent had no obvious change. The results demonstrate that the Cs3Cu2I5/ZnO heterostructure has great potential in wearable and portable visible-blind ultraviolet optoelectronic devices.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Yi-Gang Chen,Xiwei Hu,Yao Guo,Sangen Zhao,Bingbing Zhang,Xia Zhang,Xian-Ming Zhang
A challenging topic for tetrahedra-based deep-ultraviolet (deep-UV, wavelength λ < 200 nm) birefringence crystals is how to generate both large birefringence and high deep-UV transmittance. Edge-sharing tetrahedra can induce large structural distortion and thus could produce strong optical polarization anisotropy to realize the challenging topic, but edge-sharing tetrahedra frequently require extreme synthesis conditions to overcome large repulsion interaction between tetrahedra. Herein, under mild hydrothermal conditions, an α-Be3(H2O)2(PO4)2 crystal with edge-sharing BeO4 and its polymorph β-Be3(H2O)2(PO4)2 with common corner-sharing BeO4 were synthesized, both featuring a three-dimensional stable structure constructed by BeO4, BeO2(H2O)2, and PO4 tetrahedral units. Remarkably, α-Be3(H2O)2(PO4)2 manifests superior birefringence of 0.101 and high deep-UV transmittance of 167 nm, with the largest birefringent quality factor (BQF) of 0.75 among the known tetrahedra-based deep-UV materials. By contrast, β-Be3(H2O)2(PO4)2 manifests a small birefringence of 0.019 and 160 nm deep-UV transmittance, with only a mediocre BQF of 0.15. Further, computational investigations reveal that edge-sharing BeO4 makes a dominant contribution to the great birefringence. This study could push the synthesis of edge-sharing-tetrahedra materials and offers an alternative strategy toward designing high-performance tetrahedra-based deep-UV birefringence materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Zichang Wang,Jianyi Zuo,Qingyu Liu,Xueling Hou,Minqiang Gai
The first mixed alkali metal borosulfate compound, Li2NaB3S2O12 (LNBSO), which contains [BO3] groups, was designed and synthesized by using a high boron-to-sulfur ratio strategy through the high temperature solution method. LNBSO exhibits a birefringence of 0.057@546.1 nm in experiments, which was mainly contributed by the [BO3] groups, and possesses a short absorption edge at 184 nm, and the space group of LNBSO is P21/c. This newly synthesized borosulfate compound holds potential as a promising birefringent material within the deep-ultraviolet wavelength range. Moreover, the investigation on the relationship among the ratio of boron to sulfur, the dimensionality of the anionic framework, and the formation of [BO3] groups has been conducted on available borosulfate, providing insights for the synthesis of borosulfate with desirable performances.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 3
·914-920
·
IF 6.8
Zhang Zhiyuan,Xu Die,Tudi Abudukadi,Yang Zhihua,Han Shujuan,Pan Shilie
Using the well-known LiB 3 O 5 as the template, by improving the angle between B 2 O 5 units in its structure to reduce birefringence, two novel birefringent crystals Li 2 MLaB 18 O 30 (M = Rb, Cs) for preparing zero-order wave-plates are obtained by a high-temperature solution method in a closed system. Interestingly, the neighboring B 2 O 5 units are aligned almost perpendicularly, making them exhibit tiny birefringence, which is much smaller (0.0032@532 nm and 0.0027@532 nm, respectively) than that of the commercial quartz crystal (Δ n ~0.0092@visible region). Moreover, the ultraviolet cutoff edges of Li 2 MLaB 18 O 30 (M = Rb, Cs) crystals are below 200 nm, demonstrating that they can be applied as zero-order waveplate materials in the deep-ultraviolet region.
研究领域:
材料科学
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光学
·
晶体工程
·
光子学
✓ 已验证
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2021
·
IF 3.599
Dangli Gao,Yuqian Liang,Jie Gao,Hong Xin,Long Wang,Sining Yun,Xiangyu Zhang
Applications of rare-earth (Re)-doped upconversion (UC) micro/nanocrystals in varying areas have sparked a growing, constant demand for deliberate control over the luminescent profile and lifetime. A general strategy for adjusting UC luminescence is to control the dopant Re 3+ concentration. However, the progress of elevating dopant concentration is significantly limited owing to frequently encountering severe concentration quenching. Herein, by designing UC system using Tm 3+ with super long intermediate energy level lifetime and Yb 3+ with a simple two-level structure as a activator/sensitizer combination, we have achieved the unusually intense deep ultraviolet (UV) UC emissions at 290 nm and 345 nm, near UV emission at 361 nm, visible blue emissions at 452 nm and 478 nm, and near infrared (NIR) emission at 803 nm in NaYF 4 :Yb/Tm microtubes under 980 nm excitation. The luminescence intensity reaches about 56 times and 8 times enhancement for the UV and blue emission, respectively, with the increase of dopant Yb 3+ contents from 20 to 80 mol%. While luminescence lifetimes for all emissions decrease, particularly, for NIR emission at 803 nm, from 1507 μs down to 384 μs. Importantly, upon 980 nm irradiation, these UC NaYF 4 :Yb/Tm microtubes exhibit superior optical performance as a promising candidate of advanced anti-counterfeiting applications and other applications including UV light triggered reactions and multiplexing information storage.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）