Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116410
Lichao Wang (王立超) , Yang Li (李杨) , Xindi Li (李新娣) , Yiwei Zhu (朱逸玮) , Cheng Zhang (张城) , Jian Kang (康健) , Cen Shao (邵岑) , Le Zhang (张乐) , Jun Zou (邹军)
{"title":"Laser light illuminant based on YAG: Ce phosphor ceramic with ultra-high luminance, stable output, and excellent heat dissipation","authors":"Lichao Wang (王立超) , Yang Li (李杨) , Xindi Li (李新娣) , Yiwei Zhu (朱逸玮) , Cheng Zhang (张城) , Jian Kang (康健) , Cen Shao (邵岑) , Le Zhang (张乐) , Jun Zou (邹军)","doi":"10.1016/j.optmat.2024.116410","DOIUrl":"10.1016/j.optmat.2024.116410","url":null,"abstract":"<div><div>A hundred-watt level blue collimated laser is used to excite YAG: Ce phosphor ceramics to prepare a high-power white laser-based illuminant. A composite ceramic cooling device is prepared to reduce the operating temperature of YAG: Ce phosphor ceramics by using nano-silver to weld ceramics onto a copper block with a water-cooling device. Phosphor ceramics encapsulated with the above device can withstand the excitation of a 123 W blue laser, and its output luminous flux value reaches 14600 lm. The stable output time of the laser-based illuminant is over 30 min, and the operating temperature of the phosphor ceramic surface is only 270 °C. Compared with the non-cooling device package, the luminous flux of the laser-based illuminant composed of phosphor ceramics packaged with the above structure is increased by 252.8 %. The experimental results show that the composite ceramic cooling device can effectively reduce the operating temperature of phosphor ceramics which is an effective way to realize white laser-based illuminants over 10000 lm.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116410"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116402
Abdu Saeed , Eman Alzahrani , M.A. Morsi , A.E. Tarabiah , E.M. Abdelrazek , Saleh Aldwais , Saleh A. Alghamdi , Amani M. Al-Harthi , A.A. Al-Muntaser
{"title":"Enhanced optical and electrical properties of PEO/PMMA/TiO2 nanocomposites for optoelectronic applications","authors":"Abdu Saeed , Eman Alzahrani , M.A. Morsi , A.E. Tarabiah , E.M. Abdelrazek , Saleh Aldwais , Saleh A. Alghamdi , Amani M. Al-Harthi , A.A. Al-Muntaser","doi":"10.1016/j.optmat.2024.116402","DOIUrl":"10.1016/j.optmat.2024.116402","url":null,"abstract":"<div><div>In this study, we synthesized titanium oxide (TiO<sub>2</sub>) nanoparticles (NPs) via the sol-gel process and incorporated them into a polymer blend of polyethylene oxide (PEO) and polymethyl methacrylate (PMMA) to form PEO/PMMA/TiO2 nanocomposites. The TiO<sub>2</sub> NPs were integrated into the polymer matrix using the casting method at varying concentrations (1, 2, and 3 wt%). The structural, morphological, optical, and electrical properties of the prepared TiO<sub>2</sub> and nanocomposite films were thoroughly characterized using techniques such as transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible (UV–Vis) spectroscopy, and electrical impedance spectroscopy (EIS). TEM analysis revealed predominantly spherical TiO<sub>2</sub> NPs with an average particle size of 15 nm. XRD and FTIR analyses confirmed the successful incorporation of TiO<sub>2</sub> NPs and their interaction with the polymer chains, leading to modifications in the crystalline structure and chemical bonding of the nanocomposites. UV–Vis spectroscopy demonstrated a redshift in the absorption edge and increased absorbance with higher TiO₂ content, indicating enhanced optical properties. The indirect optical bandgap was observed to decrease from 4.19 eV to 2.21 eV as the TiO<sub>2</sub> concentration increased, enhancing the material's photoresponsiveness. Additionally, the refractive index increased from 2.11 to 2.91, further supporting the potential for optical applications. EIS results showed a decrease in bulk resistance with increasing TiO<sub>2</sub> concentration, suggesting improved electrical conductivity. These findings highlight the potential of PEO/PMMA/TiO<sub>2</sub> nanocomposites for optoelectronic applications, where enhanced optical properties, such as improved light absorption, higher refractive index, and improved charge transport, are critical for device performance. The study offers an understanding of the PEO/PMMA/TiO<sub>2</sub> nanocomposites, laying a foundation for future research in their applications in optoelectronic devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116402"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116409
Adriano B. Andrade , José Henrique M. de Azevedo , Giordano F.C. Bispo , Thaíse M. de Jesus , Zélia S. Macedo , Mário E.G. Valerio
{"title":"The role of Ce3+ Co-doping in the luminescent enhancement of Bi3+ emission and Bi3+→Bi2+ conversion in LiLaP4O12 host","authors":"Adriano B. Andrade , José Henrique M. de Azevedo , Giordano F.C. Bispo , Thaíse M. de Jesus , Zélia S. Macedo , Mário E.G. Valerio","doi":"10.1016/j.optmat.2024.116409","DOIUrl":"10.1016/j.optmat.2024.116409","url":null,"abstract":"<div><div>This work investigates the luminescent versatility of the LiLa<sub>(1-x-y)</sub>Bi<sub>x</sub>Ce<sub>y</sub>P<sub>4</sub>O<sub>12</sub> system as a scintillator material capable of displaying emission in a range from the blue to the red region depending on the Ce<sup>3+</sup> concentration. The LiLaP<sub>4</sub>O<sub>12</sub> host has been proven to be useful as a scintillator material when doped with some rare earths and with bismuth ions. However, the process of bismuth valence change induced by X-rays, when inserted in the LiLaP<sub>4</sub>O<sub>12</sub> matrix, is not known to date, as well as whether this can be controlled and used to enhance the luminescence emission. To determine the mechanism of interaction between the Ce<sup>3+</sup> and Bi<sup>3+</sup> ions in the LiLaP<sub>4</sub>O<sub>12</sub> host, doped and co-doped samples were synthesized and investigated. Identification of crystalline phase was carried out with X-Ray Powder Diffraction. The luminescent properties were studied via photoluminescence emission and excitation using synchrotron radiation. Scintillator features were studied through radioluminescence emission spectrum. The results indicate that Ce<sup>3+</sup> transfers either energy or electrons to Bi<sup>3+</sup> when excited with UV (5.2 eV) or X-rays, respectively. In the first case, the overall white luminescence is improved, while in the latter, enhanced red luminescence from Bi<sup>2+</sup> was observed, indicating the valence change of Bi ions, assisted by Ce co-dopant. A luminescent mechanism, based on the vacuum-referred binding energy model applied to the experimental data, was proposed to explain the Bi<sup>2+</sup> emission, deepening the understanding of the Bi emission mechanism and opening the possibility of tailoring the Bi<sup>2+</sup>/Bi<sup>3+</sup> proportion varying the Ce-co-doping concentration.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116409"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116401
Alexander Esin , Andrey Akhmatkhanov , Vladimir Pavelyev , Vladimir Shur
{"title":"Orbital momentum mode generation by a tunable diffractive optical element based on lithium niobate","authors":"Alexander Esin , Andrey Akhmatkhanov , Vladimir Pavelyev , Vladimir Shur","doi":"10.1016/j.optmat.2024.116401","DOIUrl":"10.1016/j.optmat.2024.116401","url":null,"abstract":"<div><div>Tunable LiNbO<sub>3</sub>-based diffractive optical elements (DOEs) to control orbital angular momentum spectrum of the beam are proposed. Tunable binary spiral axicons for generation of the beam with orbital angular momentum (topological charge <em>l</em> = 1) are fabricated and investigated experimentally by optical methods. The intensity distribution in the far field under a half-wave voltage (3400 V) applied to the DOE was in good agreement with the theoretical prediction. It was shown that utilization of two oppositely-rotating DOEs leads to appearance of a correlation peak, thus demonstrating ability to realize the correlation filtration for orbital momentum mode detection in telecommunication system. The response time of the DOEs was evaluated using an element designed for generating a TEM01 mode and fabricated by the same technology. The measured response time below 200 ns was limited by the bandwidth of the used photodiode. The proposed elements can be used in optical telecommunication systems with mode division multiplexing.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116401"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116347
J.M. Park , C.G. Kang , S.J. Kim , H.J. Kim , Sudipta Saha
{"title":"Scintillation properties of flexible scintillator composed on polydimethylsiloxane integrated with Lu2GdAl3Ga2O12:Pr2O3 phosphors","authors":"J.M. Park , C.G. Kang , S.J. Kim , H.J. Kim , Sudipta Saha","doi":"10.1016/j.optmat.2024.116347","DOIUrl":"10.1016/j.optmat.2024.116347","url":null,"abstract":"<div><div>This study explored the luminescence properties and sensitivity of a flexible scintillator composed on polydimethylsiloxane integrated with Lu<sub>2</sub>GdAl<sub>3</sub>Ga<sub>2</sub>O<sub>12</sub> doped with 1 mol% Pr<sub>2</sub>O<sub>3</sub> phosphors. The flexible scintillator was fabricated using a molding technique. The luminescence properties were investigated under photo, proton, and X-ray excitation at room temperature. The scintillator exhibited sharp and narrow emission peaks attributed to f-f transitions, and a decay time of 14 <span><math><mi>μ</mi></math></span>s. It demonstrated a sensitivity of 0.638 <span><math><mi>μ</mi></math></span>C/R<span><math><mi>⋅</mi></math></span>cm<sup>3</sup> under an X-ray dose of 1.841 R. This study demonstrates a high performance flexible scintillator suitable for advanced radiation detection applications in medical imaging and safety monitoring.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116347"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116397
Yana Suchikova , Serhii Nazarovets , Anatoli I. Popov
{"title":"Ga₂O₃ solar-blind photodetectors: From civilian applications to missile detection and research agenda","authors":"Yana Suchikova , Serhii Nazarovets , Anatoli I. Popov","doi":"10.1016/j.optmat.2024.116397","DOIUrl":"10.1016/j.optmat.2024.116397","url":null,"abstract":"<div><div>This study offers a comprehensive review of gallium oxide (Ga₂O₃)-based photodetectors, emphasizing their applications in solar-blind UV detection and missile tracking systems. Using bibliometric, patent, and content analysis, research trends and technological developments were examined through an extensive review of scientific publications and patents. The analysis highlights the evolution of Ga₂O₃ photodetectors, particularly in fabrication techniques, device performance, and military applications. The study identifies critical research gaps, such as the need for optimized fabrication methods and the development of self-powered photodetectors. It proposes a research agenda to improve the efficiency and reliability of Ga₂O₃-based photodetectors for advanced applications, including missile detection and beyond.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116397"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116417
Sara García-Revilla , Jon Azkargorta , Ignacio Iparraguirre , Francisco Muñoz , Joaquín Fernández , Rolindes Balda
{"title":"Influence of crystal field inhomogeneities on the spontaneous and laser tuning emission of a Nd3+-doped Li2O–BaO–Al2O3–P2O5 glass","authors":"Sara García-Revilla , Jon Azkargorta , Ignacio Iparraguirre , Francisco Muñoz , Joaquín Fernández , Rolindes Balda","doi":"10.1016/j.optmat.2024.116417","DOIUrl":"10.1016/j.optmat.2024.116417","url":null,"abstract":"<div><div>The present work focuses on the spectroscopic and laser properties of Nd<sup>3+</sup> in a Li<sub>2</sub>O–BaO–Al<sub>2</sub>O<sub>3</sub>–P<sub>2</sub>O<sub>5</sub> aluminophosphate glass which includes Judd-Ofelt calculation, stimulated emission cross-section of the <sup>4</sup>F<sub>3/2</sub> → <sup>4</sup>I<sub>11/2</sub> emission laser transition, lifetime of the <sup>4</sup>F<sub>3/2</sub> state and quantum efficiency. Site-selective laser spectroscopy and stimulated emission under selective excitation has been performed to determine the crystal field inhomogeneity at the Nd<sup>3+</sup> site together with its broadening effect on the spontaneous and laser emissions. However, a much narrowed laser emission has been achieved by using an intracavity tilting plate which acts as a tunable optical filter to adjust the laser wavelength.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116417"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optical MaterialsPub Date : 2024-11-01DOI: 10.1016/j.optmat.2024.116376
Safoora Shabbir , Rabia Naeem , Tehmeena Ishaq , Muhammad Adil Mansoor , Saba Afzal , Fatima Hassan
{"title":"Optoelectronic and Photocatalytic investigations of chitosan (CS) modified Platinum decorated ceria (Pt-CeO2-CS) composite","authors":"Safoora Shabbir , Rabia Naeem , Tehmeena Ishaq , Muhammad Adil Mansoor , Saba Afzal , Fatima Hassan","doi":"10.1016/j.optmat.2024.116376","DOIUrl":"10.1016/j.optmat.2024.116376","url":null,"abstract":"<div><div>Herein, a comparative study is performed to evaluate the Photodegradation of Methyl Orange (MO) and Photoelectrochemical (PEC) activities of novel ternary Pt–CeO<sub>2</sub>/Chitosan (Pt–CeO<sub>2</sub>/CS), and binary Pt/Chitosan (Pt/CS) and CeO<sub>2</sub>/Chitosan (CeO<sub>2</sub>/CS) composites synthesized via the chemical reduction and sol-gel methods. The structural, thermal, morphological, and optical characteristics of composite were examined using Fourier Transform Infra-Red (FTIR) Spectroscopy, Thermogravimetry (TG), Field Emission Scanning Electron Microscopy (FESEM) coupled with Electron Diffraction Spectroscopy (EDS), X-ray Diffraction (XRD), X-ray Photoelectron (XPS), UV–visible (UV–Vis), photoluminescence (PL) and Raman Spectroscopy. The UV–vis band gap analysis revealed that the reduction in the bandgap value E<sub>g</sub> value (2.7eV) increases the light absorption property. The as synthesized ternary Pt–CeO<sub>2</sub>/CS composite acts as a photocatalyst for dye decolourisation, with a maximum of 84 % of methyl orange (MO) decolourisation at <em>λ</em><sub>max</sub> of 464 nm under light irradiation. The kinetics of ternary composite was found to follow pseudo-first-order with rate constant of 0.01279 min<sup>−1</sup>. Moreover, the photoelectrochemical performance of Pt–CeO<sub>2</sub>/CS hybrid composite with 1.3 ∼ 2.5-fold higher value of current density (1.8 mA/cm<sup>2</sup> at 0.67 V vs. Ag/AgCl) is attained as compared to binary CeO<sub>2</sub>/CS and Pt/CS composites. The probable enhanced charge transfer process in Pt–CeO<sub>2</sub>/CS has been proposed responsible for the enhanced photodegradation of MO dye and improved PEC water splitting performance.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116376"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Acceptor-acceptor′-acceptor type N-annulated perylenediimide dimeric acceptors at the outside-bay position: Synthesis and role of asymmetric 4,7-di(thien-2-yl)-5-fluorobenzothiadiazole linker","authors":"Lili An , Jiayu Fang , Zezhou Liang , Junfeng Tong , Tianzhi Yu","doi":"10.1016/j.optmat.2024.116386","DOIUrl":"10.1016/j.optmat.2024.116386","url":null,"abstract":"<div><div>Acceptor-acceptor′-acceptor (A-A′-A) type <em>N</em>-annulation perylene diimide (PDI) dimeric acceptors possessed the fascinating merits but were ignored. Herein, two A-A′-A type <em>N</em>-annulated PDI dimers, termed as, DTBT-(PPDI-B)<sub>2</sub> and DTFBT-(PPDI-B)<sub>2</sub>, in which the electron-deficient moieties 4,7-di(thien-2-yl)benzothiadiazole (DTBT) and monofluorinated 4,7-di(thien-2-yl)-5-fluorobenzothiadiazole (DTFBT) were selected as the central linkers and two <em>N</em>-annulation <em>N</em>-butyl-[1,12-<em>b</em>,<em>c</em>,<em>d</em>]pyrrole-<em>N</em>,<em>N</em>ʹ-bis(2-hexyldecyl)perylenediimide (PPDI-B) aromatic rings as the dual wings were explored. The annulation-free DTBT-(PDI-HD)<sub>2</sub> was chosen as reference material. Owing to electron-donating of the newly formed pyrrolic aromatic ring, these studied <em>N</em>-annulated acceptors possessed the improved absorption and up-shifted <em>E</em><sub>LUMO</sub> than those of the counterpart DTBT-(PDI-HD)<sub>2</sub>. Both of them exhibited the wide absorption spectra spanning from 300 nm to 700 nm, the similar aggregation and good photostability in solution. Monofluorinating the central benzothiadiazole linker gave the enhanced absorption, the down-shifted <em>E</em><sub>HOMO</sub> and <em>E</em><sub>LUMO</sub>, the reduced the dihedral angle from 9.09° to 3.64° between two <em>N</em>-annulated PPDI sub-planes and the enhanced solid stacking and aggregation. As a result, the <em>N</em>-annulation modification achieved the 0.16 V increased <em>V</em><sub>OC</sub>, decreased <em>J</em><sub>SC</sub> and FF, and thus the reduced PCE of 0.90 %. Moreover, the 21.33 % increased <em>J</em><sub>SC</sub> of 3.64 mA cm<sup>−2</sup> and the 35.58 % raised <em>FF</em> up to 42.68 % were observed in the monofluorinated PTB7-Th:DTFBT-(PPDI-B)<sub>2</sub>-based device, synergistically contributing to an 62.22 % elevated PCE of 1.46 % in spite of a 0.01 V dropped <em>V</em><sub>OC</sub>. This upgradation was predominantly profited from the increased absorption, the improved exciton dissociation, elevated electron mobility and improved microstructural morphology benefiting from introducing the asymmetric 4,7-dithienyl-5-fluorobenzothiadiazole. This work demonstrates that outside bay <em>N</em>-annulation strategy could tune the molecular structure, energy level and thus improve the voltage, and monofluorinating the central linker is an effective tactic for regulating the molecular configuration, aggregation, morphology and thus elevating the photovoltaic performance in the A-A′-A type <em>N</em>-annulated PDI dimeric acceptors.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116386"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study on the carrier transmission and luminescence characteristics of n-ZnO/p-Si heterojunction device by magnetron sputtering","authors":"Yang Zhao, Meibo Xin, Jingzhe Li, Guojiao Xiang, Zhiang Yue, Xian Zhang, Enqin Zhao, Shuaikang Wei, Wenwen Jin, Chenfei Jiao, Ruofan Zhai, Fujing Dong, Kaiyuan Wang, Hui Wang","doi":"10.1016/j.optmat.2024.116440","DOIUrl":"10.1016/j.optmat.2024.116440","url":null,"abstract":"<div><div>In this study, Zinc oxide film was prepared on a sapphire substrate and a n-ZnO/p-Si heterojunction was fabricated following the optimum preparation parameters obtained in the previous stage by radio frequency (RF) magnetron sputtering. The results showed that the diffraction peaks have a preferred crystal orientation of (002) along the c-axis, the surface of the sample shown widely distributed “pill-like” grains with an overall uniform and dense appearance and a large average grain size (70.13 nm) at 1.3 Pa. The diode demonstrated excellent I–V characteristics and the turn-on voltage showed a decreasing trend with increasing of operating temperature. The device showed a large rectification ratio of about 352.2 when the applied voltage was ±2 V and the series resistance of the diode was determined to be 0.1 Ω. It manifested an impressively low leakage current of 1.37 × 10<sup>−10</sup> A. Finally, the device was examined using an electroluminescence (EL) system, which showed visible light emission from the deep level of ZnO. It could be seen that the EL spectrum was fitted by four peaks, which were located in blue (470 nm), yellow-green (575 nm) and red (721 nm, 752 nm).</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116440"},"PeriodicalIF":3.8,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142698680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}