Solid State Sciences最新文献

{"title":"Enhanced growth rates of N-type phosphorus-doped polycrystalline diamond via in-liquid microwave plasma CVD","authors":"Yusuke Tominaga ,&nbsp;Akihiro Uchida ,&nbsp;Yuvaraj M. Hunge ,&nbsp;Isao Shitanda ,&nbsp;Masayuki Itagaki ,&nbsp;Takeshi Kondo ,&nbsp;Makoto Yuasa ,&nbsp;Hiroshi Uestuska ,&nbsp;Chiaki Terashima","doi":"10.1016/j.solidstatesciences.2024.107650","DOIUrl":"10.1016/j.solidstatesciences.2024.107650","url":null,"abstract":"<div><p>Phosphorus-doped diamond (PDD) exhibits excellent properties, making it suitable for a wide range of applications, such as electronic devices and electrodes. Here, we report the first synthesis of PDD by in-liquid microwave plasma CVD (IL-MPCVD) under high-pressure and low-power conditions. A mixture of methanol (MeOH) and ethanol (EtOH) with triethyl phosphate ((C₂H₅)₃PO₄) and (P/C = 1000 ppm) was used for the PDD deposition. Samples were characterized by laser microscopy, Raman spectroscopy, and glow discharge optical emission spectroscopy. Notably, PDD was successfully produced at a growth rate of 280 μm/h, which is two orders of magnitude higher than conventional CVD methods. Additionally, cyclic voltammetry (CV) and impedance spectroscopy (EIS) were used to evaluate the electrochemical properties of PDD. As a result, we confirmed the wide potential window characteristic of conductive diamond and determined that the donor density was [P] = 3.8 × 10¹⁷cm⁻³. Therefore, it is clear that IL-MPCVD is applicable for very high growth rates in the CVD process for PDD synthesis.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107650"},"PeriodicalIF":3.4,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141948769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical and conduction mechanism study of lead-free CsMnCl3 perovskite","authors":"Moufida Krimi ,&nbsp;Mehdi Akermi ,&nbsp;Rym Hassani ,&nbsp;Abdallah Ben Rhaiem","doi":"10.1016/j.solidstatesciences.2024.107646","DOIUrl":"10.1016/j.solidstatesciences.2024.107646","url":null,"abstract":"<div><p>Perovskite research is increasingly focused on lead-free, all-inorganic single crystals due to their lower biological toxicity and greater material stability. While lead-based perovskites show promise, their environmental and health risks are concerning. Lead-free alternatives provide a safer, more sustainable option with enhanced durability for practical applications. Nevertheless, this paper presents a structural, optical, and conduction study of lead-free CsMnCl₃ perovskite. The material was prepared using slow evaporation method, the obtained compound crystallizes in a hexagonal system with the space group R-3m. The absorption spectrum of CsMnCl₃ is analyzed, and the band gap is estimated to be 4.56 eV. The electrical study is crucial for the identification of the allows us to classify CsMnCl₃ as a semiconductor, with conductivity increasing with temperature, as expected. The temperature-dependent electrical conductivity (dc) reveals a transition from semiconductor to metallic behavior at 383 K and from metallic to semiconductor behavior at 403 K. The study of the conductivity in the semiconductor phase indicates that above 383 K, the conductivity of CsMnCl₃ is governed by a single polaron hopping, and that below 403 K. In summary the comprehensive study of the structural, optical, and electrical properties of CsMnCl₃ provides valuable insights into its semiconductor characteristics and charge transport mechanisms, highlighting its potential for sustainable and environmentally friendly applications.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107646"},"PeriodicalIF":3.4,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141953280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into crystal structure, temperature-dependent magnetization and dielectric relaxation mechanism in Bi substituted samarium iron garnet","authors":"Shalini Verma,&nbsp;S. Ravi","doi":"10.1016/j.solidstatesciences.2024.107629","DOIUrl":"10.1016/j.solidstatesciences.2024.107629","url":null,"abstract":"<div><p>The single phase <span><math><mrow><mi>S</mi><msub><mi>m</mi><mrow><mn>3</mn><mo>−</mo><mi>x</mi></mrow></msub><mi>B</mi><msub><mi>i</mi><mi>x</mi></msub><mi>F</mi><msub><mi>e</mi><mn>5</mn></msub><msub><mi>O</mi><mn>12</mn></msub></mrow></math></span> with <span><math><mrow><mi>x</mi><mo>=</mo><mn>0.0</mn><mo>,</mo><mn>0.2</mn><mo>,</mo><mn>0.4</mn></mrow></math></span> and <span><math><mrow><mn>0.6</mn></mrow></math></span> samples are synthesized by solid-state reaction method. We have systematically studied the structural, morphological, temperature dependent magnetic and electric properties. All the samples crystallize in simple cubic crystal structure and belongs to <span><math><mrow><mi>I</mi><mi>a</mi><mover><mn>3</mn><mo>‾</mo></mover><mi>d</mi></mrow></math></span> space group. The lattice constant and bond angle between <span><math><mrow><mi>F</mi><mi>e</mi><mrow><mo>(</mo><mi>a</mi><mo>)</mo></mrow><mo>−</mo><mi>O</mi><mo>−</mo><mi>F</mi><mi>e</mi><mrow><mo>(</mo><mi>d</mi><mo>)</mo></mrow></mrow></math></span> network is enhanced with Bi substitution. As a result, the ferrimagnetic transition temperature is also enhanced from <span><math><mrow><mn>565</mn><mspace></mspace><mi>K</mi></mrow></math></span> to <span><math><mrow><mn>569</mn><mspace></mspace><mi>K</mi></mrow></math></span>. We have examined the applicability of Bloch's and Cojocaru's laws to our temperature-dependent magnetization data and find that Bloch's <span><math><mrow><msup><mi>T</mi><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msup></mrow></math></span> law is not suitable due to geometrical asymmetry, long wavelength excitation, and local atomic disorders. However, Cojocaru's law which accounts for the geometrical aspects, provides a better fit to our magnetization data. Further, the impedance plots at room temperature exhibit no relaxation which is attributed to the limited mobility of charge carriers. On the other hand, the high temperature impedance data represents dielectric relaxation at a particular frequency. This frequency is used to determine the relaxation time which is fitted to Arrhenius law and activation energy is evaluated. The activation energy lies in between <span><math><mrow><mn>0.24</mn><mo>−</mo><mn>0.32</mn><mspace></mspace><mi>e</mi><mi>V</mi></mrow></math></span> which corresponds to the singly ionized oxygen vacancies. The conduction mechanism is analyzed with Variable range hopping model and the average hopping length and hopping energies are also determined for these garnet samples.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"154 ","pages":"Article 107629"},"PeriodicalIF":3.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial “18th European conference on solid state chemistry 2023”","authors":"","doi":"10.1016/j.solidstatesciences.2024.107606","DOIUrl":"10.1016/j.solidstatesciences.2024.107606","url":null,"abstract":"","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"154 ","pages":"Article 107606"},"PeriodicalIF":3.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141512668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum to “Acoustic wave velocities and effective Debye temperature in potassium alum KAl(SO4)2·12H2O crystal”[Solid State Sci. 154 (2024) 107595]","authors":"Kwang-Sei Lee","doi":"10.1016/j.solidstatesciences.2024.107631","DOIUrl":"10.1016/j.solidstatesciences.2024.107631","url":null,"abstract":"","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"154 ","pages":"Article 107631"},"PeriodicalIF":3.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of Z-scheme SbVO4/g-C3N4 heterojunction with efficient photocatalytic degradation performance","authors":"Ling Wang ,&nbsp;Xiaoya Zhu ,&nbsp;Jian Rong ,&nbsp;Chujun Feng ,&nbsp;Congtian Liu ,&nbsp;Yanan Wang ,&nbsp;Zhongyu Li ,&nbsp;Song Xu","doi":"10.1016/j.solidstatesciences.2024.107639","DOIUrl":"10.1016/j.solidstatesciences.2024.107639","url":null,"abstract":"<div><p>As visible light responsive materials, g-C₃N₄ has become an outstanding research object for photocatalysis due to its facile synthesis, excellent chemical and thermal stability. In this paper, a Z-scheme SbVO₄/g-C₃N₄ heterojunction was successfully constructed by thermal polymerization method. The synthesized SbVO₄/g-C₃N₄ nanocomposite showed efficient photocatalytic activity on tetracycline (TC) degradation. The photocatalytic degradation of TC follows a first-order kinetic model, in which ·O₂⁻ and ·OH free radicals play a major role. The formation of Z-scheme heterojunction between SbVO₄ and g-C₃N₄ can effectively promote the separation of photogenerated electron-hole pairs and the generation of ·O₂⁻ and ·OH. The photocatalytic removal rate of TC reached 82.3 % within 150 min under visible light. The as-synthesized SbVO₄/g-C₃N₄ heterojunction can still maintain good stability. Furthermore, a photocatalytic degradation mechanism for the SbVO₄/g-C₃N₄ heterojunction is proposed.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107639"},"PeriodicalIF":3.4,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141883684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step solvothermal synthesis of Zn2SnO4/rGO composite material and highly gas sensing performance to acetone","authors":"Fang He ,&nbsp;Qimeng Du ,&nbsp;Yulong Zhang ,&nbsp;Wenxin Gao ,&nbsp;Hang Chen ,&nbsp;Chunxu Wang ,&nbsp;Dekuan Liu ,&nbsp;Yaomin Zhao ,&nbsp;Tiebing Cui ,&nbsp;Qi Qin","doi":"10.1016/j.solidstatesciences.2024.107638","DOIUrl":"10.1016/j.solidstatesciences.2024.107638","url":null,"abstract":"<div><p>In this study, one-step solvothermal method was employed to synthesize Zn₂SnO₄ and Zn₂SnO₄/rGO composites. Zn₂SnO₄ was bonded to the rGO surface or in the spaces between the lamellar layers to create a semiconductor composite material that is physically supported by heterojunction. Compared to Zn₂SnO₄ sensor, the Zn₂SnO₄/rGO sensing material exhibits superior gas-sensing properties to acetone. The optimal temperature of Zn₂SnO₄/rGO sensor was just 200 °C, while its sensitivity to 100 ppm acetone gas was up to 11.2. Its response and recovery times were only 8 s and 11 s, respectively. The large specific surface area and distinctive heterojunction of the composite material are responsible for the enhanced gas-sensing performance of Zn₂SnO₄/rGO sensing material. Zn₂SnO₄/rGO is an ideal sensing material due to high sensitivity, fast response/recovery properties, great selectivity, and stability.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107638"},"PeriodicalIF":3.4,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141883573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of thermoelectric properties in Sr0.6La0.4Nb2O6-δ-based ceramics by addition of graphite","authors":"Kaiwu Fu ,&nbsp;Dandan Ma ,&nbsp;Nan Zhang ,&nbsp;Jiacheng Cao ,&nbsp;Xiaonan Chen ,&nbsp;Min Zhu ,&nbsp;Peiqing La","doi":"10.1016/j.solidstatesciences.2024.107636","DOIUrl":"10.1016/j.solidstatesciences.2024.107636","url":null,"abstract":"<div><p>Oxide thermoelectric materials have a wide range of applications due to their excellent stability, low cost, and non-toxic properties. However, their low thermoelectric conversion efficiency limits their practical use. Therefore, improving the performance of oxide thermoelectric materials has become the focus of current research. Interface engineering is an important approach to enhance thermoelectric properties by optimizing electrical transport properties through multiphase composite regulation of phase interface structure. A series of Sr_0.6La_0.4Nb₂O_6-δ/x wt% graphite (x = 0, 0.6, 1.0, 1.5, 2.0) composite ceramics thermoelectric materials were prepared, and the mechanism for improving their thermoelectric properties was explored. Graphite serves as an electron momentum amplifier within the Sr_0.6Ba_0.4Nb₂O_6-δ matrix, thereby augmenting both conductivity and power factor values significantly. Notably, the incorporation of 1.5 wt% graphite led to a remarkable enhancement in the thermoelectric power factor at 1073 K, reaching an impressive value of 254.84 μW/K²m - representing a notable increase of approximately 51 % compared to the unmodified sample - primarily attributed to the elevated electrical conductivity.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107636"},"PeriodicalIF":3.4,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141848067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Na3Sc(PO4)2: Thermal behaviors, distorted β-K2SO4-type structure and dielectric properties","authors":"Yu. Yu. Dikhtyar ,&nbsp;A.V. Mosunov ,&nbsp;S.M. Posokhova ,&nbsp;O.V. Baryshnikova ,&nbsp;B.I. Lazoryak ,&nbsp;V.A. Morozov","doi":"10.1016/j.solidstatesciences.2024.107635","DOIUrl":"10.1016/j.solidstatesciences.2024.107635","url":null,"abstract":"<div><p>The Na₃Sc(PO₄)₂ (NSPO) compound was obtained by solid-state synthesis method and has a new type of distorted β-K₂SO₄ (arcanite) crystal structure that was refined based on powder XRD data in the space group (SG) <em>P</em>2₁/<em>c</em>, with unit cell parameters: <em>a</em> = 11.5533(1) Å, <em>b</em> = 5.31759(5) Å, <em>c</em> = 16.7650(2) Å, <em>β</em> = 97.6439(6)°. The NSPO is a metastable phase with an optimal synthesis temperature range between 1173 and 1233 K. When a mixture of Na₂CO₃, NH₄H₂PO₄ and Sc₂O₃ is annealed below this temperature range, the NaSICON-type compound and Na-polyphosphates is formed. However, annealing above T∼1245 K leads to the decomposition onset into the NaSICON-type compound (Na₃Sc₂(PO₄)₃), Na₃PO₄ and terminates at T∼1289 K. NSPO phase is dielectric with σ_bulk = 4.4 × 10⁻⁷ S/cm at 300 K. Increasing the temperature from 300 to 1000 K leads to an increase in σ_bulk by four orders (σ_bulk = 5.6 × 10⁻³ S/cm at 1000 K).</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107635"},"PeriodicalIF":3.4,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141838690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A single phased full color emitting pyrochlore type phosphor La2Y0.66Sn0.66Sb0.66O7: Bi3+, Eu3+ for white light emitting diode applications (WLEDs)","authors":"V.G. Suchithra,&nbsp;T.S. Sreena,&nbsp;P. Prabhakar Rao","doi":"10.1016/j.solidstatesciences.2024.107633","DOIUrl":"10.1016/j.solidstatesciences.2024.107633","url":null,"abstract":"<div><p>The phosphor converted white light emitting diodes (pc-WLEDs) are advancing rapidly in replacing the conventional fluorescent and incandescent light sources. However, the current technology of pc-WLEDs limits their large scale indoor lighting applications due to their high correlated color temperature (CCT) and poor color rendering index (CRI). In this work, a single phased full color emitting phosphor in the pyrochlore oxide system, La₂Y_0.66Sn_0.66Sb_0.66O₇: Bi³⁺, Eu³⁺ has been developed by the high temperature ceramic route. The developed phosphors are characterized by powder X-ray diffraction, luminescence and lifetime measurements. Upon near UV excitation wavelength, the singly doped phosphor, La₂Y_0.66Sn_0.66Sb_0.66O₇: Bi³⁺ show intense blue green light in the wavelength region 400–600 nm due to the characteristic transitions (³P₁ → ¹S₀) of Bi³⁺. The emission spectral analysis suggests that there exist two luminescence centers of Bi³⁺ due to occupation of different crystallographic sites in the pyrochlore lattice of La₂Y_0.66Sn_0.66Sb_0.66O₇. The deficit of red component in the emission spectra is overcome by the Eu³⁺ co-doping in the system, La₂Y_0.66Sn_0.66Sb_0.66O₇: Bi³⁺, Eu³⁺ which results in the full color emission covering the visible spectral range up to 700 nm with broad peaks along with sharp narrow characteristic peaks of Eu³⁺. The full color emission of the La₂Y_0.66Sn_0.66Sb_0.66O₇: 0.04Bi³⁺, <em>y</em>Eu³⁺ phosphors can be tuned by adjusting the suitable Eu³⁺ dopant concentration and using appropriate energy transfer from Bi³⁺ to Eu³⁺. The full color emitting phosphor, La₂Y_0.66Sn_0.66Sb_0.66O₇:0.04Bi³⁺, 0.06Eu³⁺ can be realized with the color coordinates (0.30, 0.36), and correlated color temperature (4383K). All these results demonstrate that La₂Y_0.66Sn_0.66Sb_0.66O₇:<em>x</em>Bi³⁺, <em>y</em>Eu³⁺ are potential single phased full color emitting phosphors for the development of pc-WLEDs.</p></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"155 ","pages":"Article 107633"},"PeriodicalIF":3.4,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}