Journal of Nanophotonics最新文献_第5页

Numerical analysis of surface acoustic wave driven carriers transport in GaAs/AlGaAs quantum well GaAs/AlGaAs量子阱中声表面波驱动载流子输运的数值分析

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036010

Ziliang Pang, Weiwei Cao, Jinkun Zheng, YongLin Bai

引用次数: 0

On-chip long-wave infrared gas sensor based on subwavelength grating waveguide 基于亚波长光栅波导的片上长波红外气体传感器

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036011

Jie Liao, Dong Zhang, Yuefeng Wang, Pengjun Wang, Qiang Fu, Shixun Dai, Weiwei Chen, Lingxiao Ma, Jun Li, T. Dai, Jianyi Yang

引用次数: 0

Calculation of the excited states of two-dimensional MoSi2N4 layered material semi doped with Cr and W respectively 二维MoSi2N4层状材料半掺杂Cr和W激发态的计算

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036007

C. Liang, Xudong Tang, Wangyang Ding, Xinli Liu, Nan Chen, Xiang Lu

引用次数: 0

Synthesis and characterization of thin films of P3HT − G/MoS2 nanocomposites in photodetectors applications P3HT−G/MoS2纳米复合材料薄膜在光电探测器中的合成与表征

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036009

N. Obaid, A. Al-Nafiey, G. Al-Dahash

{"title":"Synthesis and characterization of thin films of P3HT − G/MoS2 nanocomposites in photodetectors applications","authors":"N. Obaid, A. Al-Nafiey, G. Al-Dahash","doi":"10.1117/1.JNP.17.036009","DOIUrl":"https://doi.org/10.1117/1.JNP.17.036009","url":null,"abstract":"Abstract. The nanocomposite, poly(3-hexylthiophene-2,5-diyl) (P3HT)–graphene/molybdenum disulfide (MoS2), was for the first time fabricated by the pulse laser ablation (PLA) method with different numbers of laser pulses deposited onto a porous silicon (PSi) substrate using the drop-casting technique. Nanocrystalline PSi films are prepared by electrochemical etching of a P-type silicon wafer. The optical properties, transmission electron microscope (TEM), and photodetector properties were studied. Optical measurements confirmed that the energy gap decreases from 2.03 to 1.87 eV with the increasing number of laser pulses for graphene and MoS2. This decrease in the energy gap was attributed to the increase in graphene and its combination with molybdenum. Due to the higher electrical conductivity of the hybrid material, the MoS2 leads to reduce the band gap. From the TEM images, it was found that the average size of the particles was between 3.1 and 20.8 nm depending on increasing the number of laser pulses for both graphene and MoS2 with hemispherical particle shapes. The Ag / PSi / P3HT − G / MoS2 / Ag photodetector was fabricated for all samples prepared to characterize the effect of laser pulses number for graphene and MoS2 on the photodetector performance. The maximum value of the specific response, specific detection, and quantum efficiency was 0.35 A / W, 5.1 × 1012 cm Hz1/2 W − 1, and 49.2% at 900 nm due to the absorption edge of silicon around 0.23 A / W, 3.3 × 1012 cm Hz1/2 W − 1, and 38.9% at 760 nm due to the absorption edge of P3HT − G / MoS2 NPS. The results indicate that the PLA method successfully fabricated the P3HT − G / MoS2 nanocomposites and that the resulting product exhibited high values in responsivity, detectivity, and quantum efficiency. Additionally, it appears that the nanocomposites may have enhanced the same parameters of the PSi photodetector.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"036009 - 036009"},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44249520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On temporally periodic physical vapor deposition on random rough surfaces 随机粗糙表面上的时间周期性物理气相沉积

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036005

Ricardo A. Fiallo, Chengzhi Li, A. Lakhtakia, M. Horn

引用次数: 0

Light absorption enhancement of ultrathin crystalline silicon solar cells with frequency upconversion layer using silver hemisphere nanoparticles 利用银半球纳米颗粒增强具有上变频层的超薄晶硅太阳能电池的光吸收

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036001

Chenbo Wang, Zhuoqun Li, Dan Liang, Zhe Yin, Sahibzada Muhammad Zaheer, Gang Yang, Lingguang Liu, F. Bian, Zhaopeng Xu

引用次数: 0

Non-volatile flexible-grid wavelength-selective switch using subwavelength-grating-Ge2Sb2Te5-assisted silicon microring resonators 使用亚波长粒度的非易失性柔性栅极波长选择开关-Ge2Sb2Te5-辅助硅微环谐振器

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036008

Dongfei Zheng, Dejun Kong, W. Liang, Pengjun Wang, Qiang Fu, Weiwei Chen, S. Dai, Jun Li, T. Dai, Jianyi Yang

引用次数: 0

Numerical analysis of the propagation modes of photo-switching PDMS-arylazopyrazole optical waveguide and thin-film spectroscopic characterization 光开关pdms -芳基唑光波导传输模式的数值分析及薄膜光谱表征

4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-06-24 DOI: 10.1117/1.jnp.17.026014

Golsa Mirbagheri, Ikemefuna Uba, Kesete Ghebreyessus, Uwe Hömmerich, Seth Fraden, Michael Stehnach, Demetris Geddis

{"title":"Numerical analysis of the propagation modes of photo-switching PDMS-arylazopyrazole optical waveguide and thin-film spectroscopic characterization","authors":"Golsa Mirbagheri, Ikemefuna Uba, Kesete Ghebreyessus, Uwe Hömmerich, Seth Fraden, Michael Stehnach, Demetris Geddis","doi":"10.1117/1.jnp.17.026014","DOIUrl":"https://doi.org/10.1117/1.jnp.17.026014","url":null,"abstract":"A new light-responsive arylazopyrazole (AAP) containing a polymer matrix thin film is fabricated by spin-coating different concentrations of the AAP azo dye into the polydimethylsiloxane (PDMS) polymer at 150°C. The new AAP molecular switch was also used to fabricate a solid-state PDMS-AAP waveguide by contact lithography and soft replica modeling methods in the micrometer scale. The refractive index of the spin-coated photoswitchable material can be modulated via the reversible trans-to-cis photoisomerization behavior of the AAP unit using different concentrations. When 0.01 M solution of the AAP unit was used, the refractive of the composite was 2.32 in the trans state and dropped to 1.85 in the cis state in the operating wavelength of 340 nm. At higher concentrations of 0.020 and 0.03 M, a wide refractive index tuning is achieved under the same wavelength. In 0.030 M, the refractive index was 2.65 for the trans state and 2.0 for the cis state. The results suggest that the increase in refractive index tuning is related to the concentration of the AAP unit of the composite film. Theoretically, the spectral properties of the composite film are also simulated with two methods: (1) the Maxwell equations and (2) the frequency dependent finite element, showing excellent agreement for the different propagation modes of the proposed waveguide for regulated signals of 365/525 nm wavelengths. Furthermore, the photoisomerization of the PDMS-AAP thin film is analyzed with UV–vis spectroscopy to demonstrate the isomerization responses of the AAP moiety in the solid state. In addition, preliminary photomechanical actuation properties of the composite film have been investigated. The PDMS-AAP waveguide described provides a new approach for optically tunable photonics applications in the UV–visible region.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135903216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact and broadband polarization beam splitter on lithium-niobate-on-insulator using a hybrid plasmonic waveguide 采用混合等离子体波导的铌酸锂绝缘体上的小型宽带偏振分束器

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-04-01 DOI: 10.1117/1.JNP.17.026005

Jiakang Shi, D. Ge, Mengcheng Lv, Yujie Zhou, Guoxin Cui, Liqiang Zhang

引用次数: 0

Effect of hydrostatic pressure on the Auger coefficient of InGaN/GaN multiple-quantum-well laser diode 静水压力对InGaN/GaN多量子阱激光二极管俄歇系数的影响

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-04-01 DOI: 10.1117/1.JNP.17.026011

R. Yahyazadeh, Z. Hashempour

{"title":"Effect of hydrostatic pressure on the Auger coefficient of InGaN/GaN multiple-quantum-well laser diode","authors":"R. Yahyazadeh, Z. Hashempour","doi":"10.1117/1.JNP.17.026011","DOIUrl":"https://doi.org/10.1117/1.JNP.17.026011","url":null,"abstract":"Abstract. A numerical model was used to analyze the Auger coefficient in a c-plane InGaN/GaN multiple-quantum-well laser diode (MQWLD) under hydrostatic pressure. Finite difference techniques were employed to acquire energy Eigenvalues and their corresponding Eigenfunctions of InGaN/GaN MQWLD, and the hole Eigenstates were calculated via a 6 × 6 k.p method under applied hydrostatic pressure. It was found that a change in pressure up to 10 GPa increases the carrier density in the quantum well and barriers and the effective band gap. Based on the result, the exaction binding energy decreased, the electric field rate increased up to 0.77 MV / cm, and the Auger coefficient decreased down to 2.1 × 10 − 31 and 0.6 × 10 − 31 cm6 s − 1 in the MQW and barrier regions, respectively. Also, the calculations demonstrated that the hole-hole-electron (CHHS) and electron-electron-hole (CCCH) Auger coefficients had the largest contribution to the Auger coefficient. Our study provides more detailed insight into the origin of the Auger recombination rate drop under hydrostatic pressure in InGaN-based light-emitting diodes.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":"17 1","pages":"026011 - 026011"},"PeriodicalIF":1.5,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45379725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0