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Increasing the Efficiency of Triple-Junction Solar Cells Due to the Metamorphic InGaAs Subcell 利用非晶态 InGaAs 子电池提高三结太阳能电池的效率
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023900431
M. A. Mintairov, V. V. Evstropov, S. A. Mintairov, M. V. Nakhimovich, R. A. Saliy, M. Z. Shvarts, N. A. Kalyuzhniy
{"title":"Increasing the Efficiency of Triple-Junction Solar Cells Due to the Metamorphic InGaAs Subcell","authors":"M. A. Mintairov, V. V. Evstropov, S. A. Mintairov, M. V. Nakhimovich, R. A. Saliy, M. Z. Shvarts, N. A. Kalyuzhniy","doi":"10.1134/s1063785023900431","DOIUrl":"https://doi.org/10.1134/s1063785023900431","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>\u0000</h3><p>The efficiency of GaInP/GaAs/In<sub><i>x</i></sub>Ga<sub>1 –</sub> <sub><i>x</i></sub>As triple-junction solar cells obtained by replacing (in the widely used “classical” GaInP/GaAs/Ge heterostructure) the lower germanium with In<sub><i>x</i></sub>Ga<sub>1 –</sub> <sub><i>x</i></sub>As subcell formed using the metamorphic growth technology has been investigated. Based on an original approach, the optimal indium concentration in the narrow-gap subcell has been found. The main parameters of In<sub><i>x</i></sub>Ga<sub>1 –</sub> <sub><i>x</i></sub>As subcells with an indium concentration from <i>x</i> <b><i>=</i></b> 0.11 to 0.36 were determined and were used to calculate the IV characteristics of GaInP/GaAs/In<sub><i>x</i></sub>Ga<sub>1 –</sub> <sub><i>x</i></sub>As solar cells. It has been determined that at <i>x</i> <b><i>=</i></b> 0.28 the efficiency of the triple-junction solar cell increases by 3.4% (abs.) in comparison with the “classical” solar cell, reaching a value of 40.3% (AM1.5D). Also it has been shown that the efficiency of such solar cells can be increased up to 41%.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"15 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140125362","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
Thermal Conductivity of Hybrid SiC/Si Substrates for the Growth of LED Heterostructures 用于生长 LED 异质结构的混合碳化硅/硅基底的热传导率
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023010200
S. A. Kukushkin, L. K. Markov, A. V. Osipov, G. V. Svyatets, A. E. Chernyakov, S. I. Pavlov
{"title":"Thermal Conductivity of Hybrid SiC/Si Substrates for the Growth of LED Heterostructures","authors":"S. A. Kukushkin, L. K. Markov, A. V. Osipov, G. V. Svyatets, A. E. Chernyakov, S. I. Pavlov","doi":"10.1134/s1063785023010200","DOIUrl":"https://doi.org/10.1134/s1063785023010200","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>the thermal characteristics of SiC/Si samples obtained by the method of coordinated substitution of atoms at different thicknesses of SiC have been experimentally investigated. It has been found that for SiC thicknesses less than 200 nm, the thermal resistance of SiC/Si is approximately equal to 2 K/W, which is the same as for pure silicon substrate. Such samples will perfectly remove heat from the light-emitting heterostructure grown on SiC/Si. With an increase in the thickness of SiC, the SiC film is detached, which leads to a loss of thermal contact between SiC and Si. The thermal resistance increases at the same time by more than two orders of magnitude. The ability to remove easily the opaque part of the substrate can form the basis of the technology for manufacturing flip-chip LED.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"49 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155542","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
Effect of Nitrogen Plasma Treatment on the Structural and Optical Properties of InGaN 氮等离子体处理对 InGaN 结构和光学特性的影响
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s106378502390073x
V. O. Gridchin, I. P. Soshnikov, R. R. Reznik, S. D. Komarov, E. V. Pirogov, V. V. Lendyashova, K. P. Kotlyar, N. V. Kryzhanovskaya, G. E. Cirlin
{"title":"Effect of Nitrogen Plasma Treatment on the Structural and Optical Properties of InGaN","authors":"V. O. Gridchin, I. P. Soshnikov, R. R. Reznik, S. D. Komarov, E. V. Pirogov, V. V. Lendyashova, K. P. Kotlyar, N. V. Kryzhanovskaya, G. E. Cirlin","doi":"10.1134/s106378502390073x","DOIUrl":"https://doi.org/10.1134/s106378502390073x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The effect of cooling conditions in the plasma-assisted molecular-beam epitaxy growth on the structural and optical properties of InGaN nanostructures is studied. It is shown that cooling of the samples without nitrogen plasma contributes to the suppression of phase separation in InGaN nanostructures. The integrated intensity of photoluminescence from these nanostructures increased by a factor of 2.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"14 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886588","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
Investigation of the Effect of Nanosecond Laser Pulses Processing on the Microstructure and Fatigue Resistance of Commercially Pure Titanium 研究纳秒激光脉冲处理对商用纯钛微观结构和抗疲劳性的影响
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023900753
Yu. R. Kolobov, S. S. Manokhin, V. I. Betekhtin, A. G. Kadomtsev, M. V. Narykova, G. V. Odintsova, G. V. Khramov
{"title":"Investigation of the Effect of Nanosecond Laser Pulses Processing on the Microstructure and Fatigue Resistance of Commercially Pure Titanium","authors":"Yu. R. Kolobov, S. S. Manokhin, V. I. Betekhtin, A. G. Kadomtsev, M. V. Narykova, G. V. Odintsova, G. V. Khramov","doi":"10.1134/s1063785023900753","DOIUrl":"https://doi.org/10.1134/s1063785023900753","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The effect has been studied of treatment with nanosecond laser pulses on the fatigue resistance of plate samples of recrystallized (grain size of the order of 2–3 pm) commercially pure titanium (grade VT1-0) under cyclic tensile loading. The results of investigations by scanning and transmission electron microscopy of the subsurface layer microstructure of the alloy under study after exposure to nanosecond laser irradiation and subsequent fatigue tests are presented.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"10 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886963","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
NMR Study of Nanocarbon Material/Nafion Interface in a Radio Absorbing Composite 无线电吸收复合材料中纳米碳材料/非离子界面的核磁共振研究
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023010145
N. V. Glebova, A. S. Mazur, A. O. Krasnova, I. V. Pleshakov, A. A. Nechitailov
{"title":"NMR Study of Nanocarbon Material/Nafion Interface in a Radio Absorbing Composite","authors":"N. V. Glebova, A. S. Mazur, A. O. Krasnova, I. V. Pleshakov, A. A. Nechitailov","doi":"10.1134/s1063785023010145","DOIUrl":"https://doi.org/10.1134/s1063785023010145","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>inorganic-polymer composites are widely used as radio-absorbing materials, the study of their properties is important from the point of view of improving technical characteristics. The results of the study of Nafion/thermoexpanded graphite and Nafion/carbon black composites by nuclear magnetic resonance and thermogravimetry are presented. The formation of new compounds at the contact boundaries of the components, leading to thermal stabilization of the composites, is shown. Differences between thermally expanded graphite and carbon black upon interaction with Nafion are discussed.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"62 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886671","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
Concentration Cell Based on Electrogenic Processes in the Root Environment 基于根系环境中电生过程的浓缩池
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023900789
T. E. Kuleshova, G. G. Panova, N. R. Gall, A. S. Galushko
{"title":"Concentration Cell Based on Electrogenic Processes in the Root Environment","authors":"T. E. Kuleshova, G. G. Panova, N. R. Gall, A. S. Galushko","doi":"10.1134/s1063785023900789","DOIUrl":"https://doi.org/10.1134/s1063785023900789","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The experimental bioelectrochemical current source based on the concentration gradient of charge carriers in the root environment of plants has been created. A potential difference of about 70 mV is observed in the nutrient solution. It is gradually decreasing due to equalization of concentrations. The voltage increases to 200 mV when plant are placed in a cultivation system as the root system develops due to the intensification of diffusion processes. The potential-forming role of nitrate forms of nitrogen is shown on the example of lettuce grown according to the panoponics technology. The separation of electrical charges by the root system during the life of plants can become an alternative source of green energy.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"80 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886681","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
Quantum Noise Source Based on Shot Noise of a Balanced Photodetector with a Tunable Integrated Optical Beam Splitter 基于带有可调谐集成光束分束器的平衡光电探测器射出噪声的量子噪声源
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023900790
V. V. Lebedev, V. M. Petrov, I. V. Ilichev, P. M. Agruzov, A. V. Shamrai
{"title":"Quantum Noise Source Based on Shot Noise of a Balanced Photodetector with a Tunable Integrated Optical Beam Splitter","authors":"V. V. Lebedev, V. M. Petrov, I. V. Ilichev, P. M. Agruzov, A. V. Shamrai","doi":"10.1134/s1063785023900790","DOIUrl":"https://doi.org/10.1134/s1063785023900790","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A broadband quantum noise source based on detection of shot noise of a balanced photodetector is demonstrated. Precise electro-optical tuning of the balanced photodetector circuit was carried out by an integrated optical beam splitter constructed in the form of the dual output Mach–Zehnder interferometer on a lithium niobate substrate. The classical component of the detected noise related to the relative intensity noise of a laser diode was suppressed by more than 15 dB. At the maximum laser power of 100 mW, the power spectral density of detected shot noise was 12 dB higher than the level of technical noise of the measuring system in the frequency band above 3 GHz.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"24 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155536","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
Two Types of Plasma Channel Structure in High Pressure Pulse Discharge in Cesium 铯高压脉冲放电中的两种等离子体通道结构
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023010091
F. G. Baksht, V. F. Lapshin
{"title":"Two Types of Plasma Channel Structure in High Pressure Pulse Discharge in Cesium","authors":"F. G. Baksht, V. F. Lapshin","doi":"10.1134/s1063785023010091","DOIUrl":"https://doi.org/10.1134/s1063785023010091","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Simulation of the pulse-periodic high pressure cesium discharge is performed on the basis of equations of radiative gas dynamics. It is shown that in the discharge it is possible to implement two different types of structure of the plasma channel. At the beginning of the current pulse, the plasma discharge channel has a centered structure. At the same time, most of the plasma is concentrated near the discharge axis. The concentration of charged particles decreases along the radius. Then, if the current amplitude is large enough, during the plasma heating process, a transformation from the centered to the shell structure of the channel occurs. In this case, most of the plasma is concentrated on the periphery of the discharge and its concentration increases along the radius from the axis to the walls of the tube. It is shown that the transition from one channel structure to another occurs at a time when the specific heat capacity of the plasma near the axis reaches a deep minimum corresponding to a completely single ionized <i>e</i>–<i>i</i>-plasma.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"31 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155538","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
Nature of the Local Environment of Germany Atoms in Amorphous Films (GeTe)x(Sb2Te3) 非晶薄膜 (GeTe)x(Sb2Te3) 中德国原子局部环境的性质
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023900820
A. V. Marchenko, E. I. Terukov, F. S. Nasredinov, Yu. A. Petrushin, P. P. Seregin
{"title":"Nature of the Local Environment of Germany Atoms in Amorphous Films (GeTe)x(Sb2Te3)","authors":"A. V. Marchenko, E. I. Terukov, F. S. Nasredinov, Yu. A. Petrushin, P. P. Seregin","doi":"10.1134/s1063785023900820","DOIUrl":"https://doi.org/10.1134/s1063785023900820","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Using Messbauer spectroscopy on <sup>119</sup>Sn impurity atoms, it was demonstrated that in amorphous (GeTe)<sub><i>x</i></sub>(Sb<sub>2</sub>Te<sub>3</sub>) films (where <i>x</i> = 0.5, 1, 2, 3) tin atoms replace atoms of tetravalent germanium, which forms a tetrahedral system of chemical bonds with atoms in its local environment. In crystalline films, tin replaces divalent six-coordinated germanium in positions 4<i>b</i> of the NaCl-type crystal lattice.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"78 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155539","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
Effect of Sodium Atom Adsorption on the Electronic Structure of a Gold Film 钠原子吸附对金薄膜电子结构的影响
IF 0.6 4区 物理与天体物理
Technical Physics Letters Pub Date : 2024-03-14 DOI: 10.1134/s1063785023010121
P. A. Dementev, E. V. Dementeva, M. N. Lapushkin, D. A. Smirnov, S. N. Timoshnev
{"title":"Effect of Sodium Atom Adsorption on the Electronic Structure of a Gold Film","authors":"P. A. Dementev, E. V. Dementeva, M. N. Lapushkin, D. A. Smirnov, S. N. Timoshnev","doi":"10.1134/s1063785023010121","DOIUrl":"https://doi.org/10.1134/s1063785023010121","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The electronic structure of a gold film deposited on W was studied during the adsorption of sodium atoms. An analysis of the photoemission spectra from the valence band and core levels of Au 4<i>f</i> and Na 2<i>p</i> upon synchrotron excitation in the photon energy range of 80–600 eV showed that Na adsorption leads to the formation of Na<sub><i>x</i></sub>Au<sub><i>y</i></sub> intermetallic compounds of various stoichiometry under the Na monolayer.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"85 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155541","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
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