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The 1-MeV electron irradiation effect and damage mechanism analysis of GaInP/GaAs heterojunction solar cells 认领 引用
1
作者 Kelun Zhao Jiaming Zhou +6 位作者 Yanqing Zhang Qiang Kang Yang Liu Xinyi Li Chaoming Liu Tianqi Wang Mingxue Huo 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第4期693-701,共9页
This study explore the radiation damage effects on GaInP/GaAs heterojunction(HJT)solar cells when subjected to 1-MeV electron irradiation.Light I-V measurements show that Voc,Jsc,and Pmaxof the cells exhibit ... This study explore the radiation damage effects on GaInP/GaAs heterojunction(HJT)solar cells when subjected to 1-MeV electron irradiation.Light I-V measurements show that Voc,Jsc,and Pmaxof the cells exhibit a logarithmic degradation pattern with increasing electron irradiation fluence.Under identical irradiation conditions,the degradation of Jscis substantially less pronounced than that of Voc.Under the same conditions,the heterojunction cell shows better radiation resistance,mainly as its Vocdegradation rate with fluence increase is lower than the homojunction cell.Spectral response analysis reveals that 1-MeV electron radiation mainly causes longwave zone damage in the GaInP/GaAs HJT cells,which intensifies as irradiation fluence accumulates.Dark characteristic analysis indicates that both recombination and diffusion currents in the cells rise with increasing irradiation fluence,with recombination current dominating the dark current.Deep level transient spectroscopy tests show that 1-MeV electron irradiation introduces four defects(H1-H4)in the cells,located at H1(Ev+0.717 eV)/H*1(Ev+0.744 eV),H2(Ev+0.369 e V),H3(Ev+0.282 eV),and H4(Ev+0.032 e V).Among these,the concentration H1of defects increases most drastically with fluence and directly correlates with the rapid degradation of cell performance under high fluence,making it the crucial factor responsible for the swift degradation of GaInP/GaAs HJT cells under high fluence 1-MeV electron irradiation. 展开更多
关键词 1-MeV electron radiation GaInP/GaAs HJT solar cell deep level transient spectroscopy(DLTS)
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Heavy-ions-induced failure mechanisms and structural damage in SiC MOSFETs under complex irradiation conditions 认领 引用
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作者 Yiping Xiao Chaoming Liu +4 位作者 Jiaming Zhou Le Gao Mingzheng Wang Tianqi Wang and Mingxue Huo 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第1期599-606,共8页
The failure mechanisms and structural damage of SiC MOSFETs induced by heavy ion irradiation were demonstrated.The findings reveal three degradation modes,depending on the drain voltage.At a relatively low voltage,the... The failure mechanisms and structural damage of SiC MOSFETs induced by heavy ion irradiation were demonstrated.The findings reveal three degradation modes,depending on the drain voltage.At a relatively low voltage,the damage is triggered by the formation and activation of gate latent damage(LDs),with damage concentrated in the gate oxide.The second degradation mode involves permanent leakage current degradation,with damage progressively transitioning from the oxide to the SiC material as the drain voltage escalates.Ultimately,the device undergoes catastrophic burnout above certain voltages,characterized by the lattice temperature reaching the sublimation point of SiC,resulting in surface cavity and complete structural destruction.This paper presents a comprehensive investigation of SiC MOSFETs under heavy ion exposure,providing radiation resistance methods of SiC-based devices for aerospace applications. 展开更多
关键词 heavy ion irradiation silicon carbide(SiC)MOSFETs structural damage failure mechanism
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Microstructures and mechanical properties of laser-directed energy deposited CrCoNi medium-entropy alloy 认领 引用 被引量：5
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作者 Wen-Jie Zhao Chang-Yu Liu +5 位作者 Peng-Cheng Che Zhi-Liang Ning Hong-Bo Fan Jian-Fei Sun Yong-Jiang Huang Alfonso H.W.Ngan 《Rare Metals》 SCIE EI CAS CSCD 2024年第7期3286-3300,共15页
The distinctive intrinsic heat treatment(IHT)originating from cyclic reheating in the laser-directed energy deposition(LDED) has attracted growing attention in recent years.In this investigation,simulations and experi... The distinctive intrinsic heat treatment(IHT)originating from cyclic reheating in the laser-directed energy deposition(LDED) has attracted growing attention in recent years.In this investigation,simulations and experimental characterizations were performed to examine the impact of IHT on the micros true ture and mechanical properties of LDED-fabricated CrCoNi medium-entropy alloy(MEA).The results show that the intensity of the IHT is proportional to the utilized laser energy density(LED).As the LED increased,significant dynamic recrystallization and grain refinement occurred within the alloy due to the enhanced intensity of IHT.However,the high LED leads to severe hot cracking within the as-built MEA,resulting in inferior ductility.By decreasing LED,the hot cracking was effectively eliminated.Meanwhile,low LED weakened the intensity of IHT and consequently inhibited kinetic conditions of dynamic recrystallization,resulting in a heterogeneous grain structure characterized by multi-scale-sized grains.This structure provides significant hetero-deformation-induced hardening during plastic deformation,enabling the alloy to have a sustainable work-hardening capacity.We expect that this work will have implications in taking full advantage of the unique IHT of the LDED process to fabricate ME As with excellent metallurgical quality and mechanical performance. 展开更多
关键词 Intrinsic heat treatment Laser-directed energy deposition CrCoNi MEA Dynamic recrystallization Heterogeneous grain structure
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Spontaneous magnetization and magnetic domain texture of strontium hexaferrite in equilibrium state 认领 引用 被引量：3
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作者 Dan Liu Si-Da Jiang +6 位作者 Li-Chen Wang Ruo-Shui Liu Ming Zhang Tong-Yun Zhao Feng-Xia Hu Ji-Rong Sun Bao-Gen Shen 《Rare Metals》 SCIE EI CAS CSCD 2022年第9期3019-3026,共8页
The spontaneous magnetization and equilibrium domain of SrFeOunder zero external field by micromagnetic simulation and experimental measurements were investigated.It was found that the magnetic moment distribution was... The spontaneous magnetization and equilibrium domain of SrFeOunder zero external field by micromagnetic simulation and experimental measurements were investigated.It was found that the magnetic moment distribution was extremely sensitive to the grain size of strontium hexaferrite.The critical diameter from single-domain to multi-domain can be controlled by changing the thickness and diameter,which is the key to improve the permanent magnet properties. 展开更多
关键词 properties. magnetization magnetic
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Recent advances in MXene-based flexible pressure sensors for medical monitoring 认领 引用 被引量：2
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作者 Xu-Hui Zhang Bo Wang +6 位作者 Bin Zhou Hai-Jun Lin Yu-Xi Liu Fu-Mei Yang Shang-Kun Sun Qing-Hao Song Qing Wu 《Rare Metals》 SCIE EI CAS CSCD 2025年第6期3653-3685,共33页
The emergence of two-dimensional nanomaterials,especially MXene,significantly overcomes the limitations of flexible pressure sensors regarding their sensing abilities,mechanical properties,and electromagnetic shieldin... The emergence of two-dimensional nanomaterials,especially MXene,significantly overcomes the limitations of flexible pressure sensors regarding their sensing abilities,mechanical properties,and electromagnetic shielding effectiveness.This advancement underscores their great potential for use in wearable and medical monitoring devices.However,single-layer MXene is highly prone to oxidation when exposed to air and tends to stack between layers.Combining MXene with other functional materials to create heterojunction structures effectively addresses the stacking problem while also providing the resulting composites with excellent electrical conductivity,mechanical flexibility,and electromagnetic shielding capabilities,which are essential for enhancing sensor performance.This review systematically outlines various microstructural designs and improvement strategies aimed at boosting the sensing efficiency of different flexible pressure sensors based on MXene.It offers a comprehensive analysis of their significance in medical monitoring,anticipates future challenges and opportunities,and serves as an important reference for advancing precision and personalized approaches in medical monitoring. 展开更多
关键词 Flexible pressure sensors Electromagnetic shielding-MXenes Microstructure Medical monitoring
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LISS enables immune evasion of colorectal cancers irrespective of MSI status 认领 引用
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作者 Qingyu Lin Xingwen Wang +15 位作者 Weixu Zhao Shiying Song Yi Zhang Jiangwen Ma Tianyu Li Yuhan Wei Minqiao Lu Guixue Hou Meiqi Wang Hao Liu Shanliang Zheng Olga Burenina Zhiyuan Xiang Li Li Jiaqi Zhu Ying Hu 《Signal Transduction and Targeted Therapy》 SCIE CSCD 2026年第6期3779-3792,共14页
Despite being hailed as a significant advancement in cancer treatment,immune checkpoint blockade(ICB)has not yielded favorable outcomes in colorectal cancer,both in approximately 85%of cases characterized by microsate... Despite being hailed as a significant advancement in cancer treatment,immune checkpoint blockade(ICB)has not yielded favorable outcomes in colorectal cancer,both in approximately 85%of cases characterized by microsatellite stability(MSS)and approximately 50%of microsatellite instability(MSI)cases.How ICB efficiency in colorectal cancer treatment can be improved remains unclear.Here,we identify a new immunoregulatory long non-coding RNA(lncRNA)gene named lncRNA of IFN-γ-signaling suppressor(LISS).LISS expression is increased in colorectal cancers and is linked to poor prognosis,as well as a high CD8+score.Functional studies reveal that LISS impairs T cell-mediated cytotoxicity,regardless of MSS/MSI status.Mechanistically,LISS interacts directly with the kinase regulatory domain in calmodulin-dependent kinase(CamK)IIγthrough a microdomain containing two independent RNA stem-loops.This interaction prevents the binding and phosphorylation of its substrate signal transducer and activator of transcription1(STAT1)at serine(S)727,a modification necessary for optimal activation of STAT1 and the subsequent major histocompatibility complex I(MHC-I)gene expression.Analysis of human colorectal cancer samples reveals significant inverse correlations between LISS and pS-STAT1 or MHC-I.The knock-in of LISS in intestinal epithelium promotes adenoma development in Apcmin/+mice.LISS antisense oligonucleotide(ASO)-based therapies enhance the responses of both MSS and MSI colorectal cancers to ICB in vivo,mainly by restoring MHC-I expression.Therefore,we have identified the previously uncharacterized lncRNA LISS to be a regulator of T cell immunity.Targeting it may be an effective therapeutic strategy to improve ICB in colorectal cancers with varying MSI characteristics. 展开更多
关键词 long non coding RNA colorectal cancer microsatellite instability colorectal cancerboth Liss checkpoint blockade icb microsatellite stability mss immune checkpoint blockade
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Improved Plasmonic Hot‑Electron Capture in Au Nanoparticle/Polymeric Carbon Nitride by Pt Single Atoms for Broad‑Spectrum Photocatalytic H2Evolution 认领 引用 被引量：12
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作者 Manyi Gao Fenyang Tian +3 位作者 Xin Zhang Zhaoyu Chen Weiwei Yang Yongsheng Yu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第8期423-435,共13页
ABSTRACT Rationally designing broad-spectrum photocatalysts to harvest whole visible-light region photons and enhance solar energy conversion is a“holy grail”for researchers,but is still a challenging issue.Herein,b... ABSTRACT Rationally designing broad-spectrum photocatalysts to harvest whole visible-light region photons and enhance solar energy conversion is a“holy grail”for researchers,but is still a challenging issue.Herein,based on the common polymeric carbon nitride(PCN),a hybrid co-catalysts system comprising plasmonic Au nanoparticles(NPs)and atomically dispersed Pt single atoms(PtSAs)with different functions was constructed to address this challenge.For the dual co-catalysts decorated PCN(PtSAs–Au2.5/PCN),the PCN is photoexcited to generate electrons under UV and short-wavelength visible light,and the synergetic Au NPs and PtSAs not only accelerate charge separation and transfer though Schottky junctions and metal-support bond but also act as the co-catalysts for H2 evolution.Furthermore,the Au NPs absorb long-wavelength visible light owing to its localized surface plasmon resonance,and the adjacent PtSAs trap the plasmonic hot-electrons for H2 evolution via direct electron transfer effect.Consequently,the PtSAs–Au2.5/PCN exhibits excellent broad-spectrum photocatalytic H2 evolution activity with the H2 evolution rate of 8.8 mmol g−1 h−1 at 420 nm and 264μmol g−1 h−1 at 550 nm,much higher than that of Au2.5/PCN and PtSAs–PCN,respectively.This work provides a new strategy to design broad-spectrum photocatalysts for energy conversion reaction. 展开更多
关键词 Polymeric carbon nitride Au nanoparticles Pt single atoms Photocatalytic H2 evolution Broad-spectrum photocatalysts
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Relating microstructure to magnetocaloric properties in RE36Tb20Co20Al24(RE=Gd,Dy or Ho)high-entropy metallic-glass microwires designed by binary eutectic clusters method 认领 引用 被引量：7
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作者 Hangboce Yin Jun-Qiang Wang +5 位作者 Yongjiang Huang Hongxian Shen Shu Guo Hongbo Fan Juntao Huo Jianfei Sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第18期167-176,共10页
The new high-entropy metallic-glasses(HE-MGs)are designed by using Dy and Ho to replace Gd in Gd36Tb20Co20Al24alloy based on the binary eutectic clusters method.Compared with the equiatomic Gd 25 Tb 25 Co ... The new high-entropy metallic-glasses(HE-MGs)are designed by using Dy and Ho to replace Gd in Gd36Tb20Co20Al24alloy based on the binary eutectic clusters method.Compared with the equiatomic Gd 25 Tb 25 Co 25 Al 25 HE-MG,the non-equiatomic RE36Tb20Co20Al24(RE=Gd,Dy,or Ho)alloys show bet-ter glass-forming ability,which is attributed to the deep binary eutectic compositions used for alloy de-sign.All RE36Tb20Co20Al24alloys undergo second-order magnetic transition.An extreme peak value of magnetic entropy change is obtained as 10.3 J kg-1 K-1(5 T)for the Ho36Tb20Co20Al24alloy.In-situ high-energy synchrotron X-ray diffraction was conducted to observe the microstructural difference among non-equiatomic samples at cryogenic temperatures.The results indicate that Gd36Tb20Co20Al24alloy possesses a relatively large average value of the dispersion of local clusters at a low-temperature range.This,com-bined with the critical exponentβclose to 0.5 of Gd36Tb20Co20Al24alloy,leads to its widest working temperature span among non-equiatomic samples.This work successfully establishes the connection be-tween microstructure and magnetocaloric properties of HE-MGs,which is beneficial for understanding the physical mechanism of the magnetocaloric behaviors of HE-MGs. 展开更多
关键词 High-entropy metallic-glass Magnetocaloric effect High energy synchrotron X-ray diffraction Cryogenic temperature
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Enhancing the magnetocaloric response of high-entropy metallic-glass by microstructural control 认领 引用 被引量：8
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作者 Hangboce Yin Jia Yan Law +5 位作者 Yongjiang Huang Hongxian Shen Sida Jiang Shu Guo Victorino Franco Jianfei Sun 《Science China Materials》 SCIE EI CAS CSCD 2022年第4期1134-1142,共9页
Non-equiatomic high-entropy alloys(HEAs),the second-generation multi-phase HEAs,have been recently reported with outstanding properties that surpass the typical limits of conventional alloys and/or the first-generatio... Non-equiatomic high-entropy alloys(HEAs),the second-generation multi-phase HEAs,have been recently reported with outstanding properties that surpass the typical limits of conventional alloys and/or the first-generation equiatomic single-phase HEAs.For magnetocaloric HEAs,non-equiatomic(Gd36Tb20Co20Al24)100−xFex microwires,with Curie temperatures up to 108 K,overcome the typical low temperature limit of rare-earth-containing HEAs(which typically concentrate lower than around 60 K).For alloys with x=2 and 3,they possess some nanocrystals,though very minor,which offers a widening in the Curie temperature distribution.In this work,we further optimize the magnetocaloric responses of x=3 microwires by microstructural control using the current annealing technique.With this processing method,the precipitation of nanocrystals within the amorphous matrix leads to a phase compositional difference in the microwires.The multi-phase character leads to challenges in rescaling the magnetocaloric curves,which is overcome by using two reference temperatures during the scaling procedure.The phase composition difference increases with increasing current density,whereby within a certain range,the working temperature span broadens and simultaneously offers relative cooling power values that are at least 2-fold larger than many reported conventional magnetocaloric alloys,both single amorphous phase or multi-phase character(amorphous and nanocrystalline).Among the amorphous rare-earth-containing HEAs,our work increases the working temperature beyond the typical<60 K limit while maintaining a comparable magnetocaloric effect.This demonstrates that microstructural control is a feasible way,in addition to appropriate compositional design selection,to optimize the magnetocaloric effect of HEAs. 展开更多
关键词 covalent organic framework low-temperature photothermal therapy gambogic acid heat-shock protein 90 lung metastasis
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