{"title":"A Multifunctional Device Combining Photodetection and Neuromorphic Memory for Efficient Target Recognition","authors":"Bingqi Cai;Chen Wang;Kun Chen;Qingqing Sun;David Wei Zhang;Lin Chen","doi":"10.1109/LED.2025.3563967","DOIUrl":"https://doi.org/10.1109/LED.2025.3563967","url":null,"abstract":"The distinct optical characteristics of photodetectors and neuromorphic photomemristors confer unique advantages in various application scenarios. However, integrating both functionalities within a single optoelectronic device remains a challenge. In this study, we propose a multifunctional optoelectronic device consisting of a Pt/IGZO/ZnO/Au structure with a light response spectrum spanning from deep ultraviolet (250 nm) to red light (620 nm). Notably, the device exhibits varying photoelectric properties depending on the wavelength. Specifically, in the green (550 nm) to red (620 nm) range, it functions as a photodetector, while in the deep ultraviolet (250 nm) to blue (450 nm) range, it exhibits the photoelectric characteristics of neuromorphic photomemristors. By leveraging the distinct responses of the device to blue, green, and red light, we successfully demonstrate the task of blue feature extraction and target recognition through simulation. This work offers valuable insights for the development of new multifunctional optoelectronic devices.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1227-1230"},"PeriodicalIF":4.1,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Vertical Channel-All-Around (CAA) IGZO FET With Recessed Source/Drain Structure to Improve Contact Characteristics","authors":"Chuanke Chen;Chen Gu;Yue Zhao;Xinlv Duan;Congyan Lu;Jiebin Niu;Kaiping Zhang;Yu Liu;Shengjie Zhao;Weiwei Li;Wanming Wu;Chunyu Zhang;Ke Hu;Shipeng Wang;Qingding Tong;Yinzhi Tang;Nianduan Lu;Di Geng;Ling Li","doi":"10.1109/LED.2025.3563839","DOIUrl":"https://doi.org/10.1109/LED.2025.3563839","url":null,"abstract":"We proposed recessed source/drain(S/D) structure for vertical channel-all-around (CAA) IGZO FET to introduce contact interlayer and improve its contact characteristics. The IZO interlayer introduced between S/D and IGZO helps to reduce the contact resistance, and boosting the performance of CAA IGZO FET. The fabricated CAA IGZO FETs with 8 nm IZO interlayer show an average Ion @ V<inline-formula> <tex-math>${}_{text {th}}+1$ </tex-math></inline-formula>V of <inline-formula> <tex-math>$32.6~mu $ </tex-math></inline-formula>A/<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>m, SS of 86 mV/dec, and Vth of - 0.06 V. The Schottky barrier height <inline-formula> <tex-math>${q}phi _{B}$ </tex-math></inline-formula> is extracted to be reduced from 170 meV to 65 meV by introducing the contact interlayer, which confirms the improvement of contact characteristics.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1127-1130"},"PeriodicalIF":4.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10975041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hang Chen;Shuhui Zhang;Tianpeng Yang;Tingting Mi;Xiaowen Wang;Chao Liu
{"title":"Vertical Ultra-Wide Bandgap Al0.5Ga0.5N P-N Memory Diodes","authors":"Hang Chen;Shuhui Zhang;Tianpeng Yang;Tingting Mi;Xiaowen Wang;Chao Liu","doi":"10.1109/LED.2025.3563594","DOIUrl":"https://doi.org/10.1109/LED.2025.3563594","url":null,"abstract":"We report vertical p-n memory diodes based on ultra-wide bandgap <inline-formula> <tex-math>$Al_{{0}.{5}}$ </tex-math></inline-formula> <inline-formula> <tex-math>$Ga_{{0}.{5}}$ </tex-math></inline-formula>N heterostructures on sapphire substrates. A conductive path with variable resistance is formed in the AlGaN p-n diodes at a low trigger voltage of <inline-formula> <tex-math>$text {-}47$ </tex-math></inline-formula> V, thanks to the intentionally inserted heavily doped n-<inline-formula> <tex-math>$Al_{{0}.{5}}$ </tex-math></inline-formula><inline-formula> <tex-math>$Ga_{{0}.{5}}$ </tex-math></inline-formula>N layer at the p-n junction interface. A notable hysteresis phenomenon can be observed, characterized by repeatable write/erase program cycles. Consistent and repeatable switching performance across 100 cycles has been observed, verifying the stability of the conductive path in the vertical AlGaN p-n memory diodes. These results provide promising strategies and potential reference for developing robust and reliable memory devices based on III-nitride ultra-wide bandgap semiconductors.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1043-1046"},"PeriodicalIF":4.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"InGaAlAs/InP MQW Transistor Lasers Based on Step-Ridge Waveguides","authors":"Yijia Liu;Lijun Qiao;Xin Tang;Song Liang;Mingjiang Zhang","doi":"10.1109/LED.2025.3563705","DOIUrl":"https://doi.org/10.1109/LED.2025.3563705","url":null,"abstract":"We propose and numerically investigate a new step-ridge-waveguide InGaAlAs/InP multi-quantum well (MQW) transistor laser (TL). The carrier nonradiative recombination centers caused by the exposed deep-ridge waveguide sidewall significantly degrade the optoelectronic performance of the TLs. The step-ridge-waveguide structure guides carriers through the center portion of the ridge waveguide, thereby effectively mitigating the effect of the nonradiative recombination defects. Simulation results show that the optoelectronic characteristics of the step-ridge TL are far better than those of the conventional deep-ridge TL, and the current amplification factor of the step-ridge TL is not affected by the laser excitation. This structure provides a new option for the simultaneous enhancement of the optoelectronic performance of TLs.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1071-1074"},"PeriodicalIF":4.1,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Mode-Localized Pressure Sensor With Dual Temperature Compensation Method","authors":"Jiaxin Qin;Yulan Lu;Bo Xie;Xiaoye Huo;Deyong Chen;Junbo Wang;Nan Li;Jian Chen","doi":"10.1109/LED.2025.3563190","DOIUrl":"https://doi.org/10.1109/LED.2025.3563190","url":null,"abstract":"Mode-localized pressure sensors have the advantage of high sensitivity and resolution, making them being widely studied. However, they also suffer from the influence of temperature fluctuations due to the thermal stress, but compensation method has not been explored. This study proposes a mode-localized pressure sensor with dual temperature compensation. The temperature dependence of the output signal and the compensation method is elucidated. Both passive and active methods are considered, as passive methods typically serve as the foundation for attaining an efficient active compensation outcome. Consequently, the sensor is packaged using low-stress bonding techniques, specifically Au-Si eutectic bonding. On the basis of the passive compensation, electrostatic forces are also employed to further mitigate the errors in amplitude ratio output induced by thermal stress. This approach effectively decouples the output signal from temperature. The sensor was tested from <inline-formula> <tex-math>$- 20~^{circ }$ </tex-math></inline-formula>C to <inline-formula> <tex-math>$60~^{circ }$ </tex-math></inline-formula>C, and the results show the feasibility and advantages of the proposed compensation method.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1203-1206"},"PeriodicalIF":4.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dual-Gate Hybrid Ferroelectric Transistor Combines Photo-Switchable Logic and Memory for Encrypted Optical Communication","authors":"Shasha Li;Xinyue Xu;Yong Yan","doi":"10.1109/LED.2025.3563268","DOIUrl":"https://doi.org/10.1109/LED.2025.3563268","url":null,"abstract":"The demand for progressive miniaturization of optoelectronic devices drives advancements in contemporary information technology, including edge computing, image recognition, and data encryption in terminal devices. The logic-in-memory architecture enables monolithic integration of memory and logic functions. In this study, we suggest a dual-gate hybrid ferroelectric transistor (DG-HFT) consisting of the vertically stacked tellurium/<inline-formula> <tex-math>$alpha $ </tex-math></inline-formula>-In2Se3 junction and metal-insulator-semiconductor gate structure. This enables the integration of three fundamental logic functions (NAND, NOR, and NXOR) with in-situ memory capabilities within a single device. Using DG-HFT as reconfigurable phototransistor, we implemented an encrypted optical communication system, advancing next-generation multifunctional information systems.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1243-1246"},"PeriodicalIF":4.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Terahertz On-Chip Lowpass Filter Based on Spoof Surface Plasmon Polaritons","authors":"Kai-Da Xu;Dongxu Wang;Ying-Jiang Guo;Yiqun Liu;Pin Wen","doi":"10.1109/LED.2025.3563208","DOIUrl":"https://doi.org/10.1109/LED.2025.3563208","url":null,"abstract":"A new silicon germanium (SiGe)-based D-band lowpass filter (LPF) is proposed utilizing on-chip spoof surface plasmon polaritons (SSPPs). By analyzing the unique dispersion characteristics, the cutoff frequency of this on-chip SSPP-based LPF can be easily controlled by adjusting the width of the SSPP unit cell. Then, it can be further fine-tuned by modifying the length of the stub slot in the unit cell. For demonstration, an example of the proposed LPF is fabricated and experimentally tested, whose simulated and measured results are in good agreement. The measured cutoff frequency of the fabricated LPF prototype is 160 GHz. Due to its strong field confinement and flexibly tunable characteristics, the proposed on-chip SSPP structure is attractive for the applications in terahertz plasmonic devices and circuits.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1031-1034"},"PeriodicalIF":4.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Keyou Tong;Jing Xu;Bohan Chen;Xu Chen;Binbin Xu;Shuai Yang;Xiaolei Wang;Jun Luo
{"title":"Enhancement of Ferroelectricity in Hf0.5Zr0.5O2 via Pre-Crystallization and Interface Engineering at Ultra-Low Temperature (300 °C) Annealing","authors":"Keyou Tong;Jing Xu;Bohan Chen;Xu Chen;Binbin Xu;Shuai Yang;Xiaolei Wang;Jun Luo","doi":"10.1109/LED.2025.3563376","DOIUrl":"https://doi.org/10.1109/LED.2025.3563376","url":null,"abstract":"The interface degradation between ferroelectric film and surrounding layers limits the endurance of hafnia ferroelectric devices significantly. This letter proposes a promising TiN/TZHZT/TiN structure with TiO2/ZrO2 bi-interlayers on both sides of a sub-7 nm Hf0.5Zr0.5O2 (HZO). The TZHZT sample underwent ultra-low temperature annealing at <inline-formula> <tex-math>$300~^{circ }$ </tex-math></inline-formula>C demonstrates exceptional ferroelectric properties, i.e. significant remnant polarization (<inline-formula> <tex-math>$2{P}_{r} = 28.2~mu $ </tex-math></inline-formula>C/cm<inline-formula> <tex-math>${}^{{2}}text {)}$ </tex-math></inline-formula>, appropriate coercive field (<inline-formula> <tex-math>${E}_{c} =1.7$ </tex-math></inline-formula> MV/cm), and excellent endurance exceeding <inline-formula> <tex-math>$10^{{10}}$ </tex-math></inline-formula> cycles. Achieved results are attributed to the synergistic effects of dual interlayer engineering. Specifically, the ZrO2 interlayer promotes the growth of ferroelectric grains through the formation of seed crystals, leading to larger grain size after annealing. Meanwhile, the TiO2 interlayer enhances tensile stress and oxygen enrichment, thereby improving both <inline-formula> <tex-math>$2{P}_{r}$ </tex-math></inline-formula> and endurance. Moreover, the ZrO2 interlayer effectively compensates the deficiency of breakdown strength for TiO2 layer.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 6","pages":"928-931"},"PeriodicalIF":4.1,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing Reliability in Ferroelectric ScAlN Non-Volatile Memory With AlOₓ Layer Insertion","authors":"Rui Wang;Ping Wang;Haotian Ye;Ran Feng;Xifan Xu;Bingxuan An;Yuzhi Deng;Fang Liu;Bowen Sheng;Tao Wang;Xiantong Zheng;Bo Shen;Xinqiang Wang","doi":"10.1109/LED.2025.3563098","DOIUrl":"https://doi.org/10.1109/LED.2025.3563098","url":null,"abstract":"Ferroelectric non-volatile memory (FeNVM) is gaining significant attention for its potential applications in data storage and neuromorphic computing. Among the promising materials for next-generation FeNVM, scandium aluminum nitride (ScAlN), has garnered attention due to its favorable ferroelectric properties and compatibility with existing Si and GaN semiconductor platforms, as well as CMOS technology. However, current ScAlN-based FeNVMs have been limited by a low Vb/Vsw(breakdown voltage to polarization switching voltage ratio) figure of merit (FOM) and inadequate endurance, hindering their widespread adoption. To overcome these limitations, we proposed an innovative ScAlN FeNVM architecture that incorporates an AlOx interlayer deposited via atomic layer deposition (ALD). This strategic addition significantly enhances the device’s performance, achieving a competitive Vb/Vsw FOM of 1.7 and extending the endurance to up to <inline-formula> <tex-math>$10^{{6}}$ </tex-math></inline-formula> write-erase cycles. Furthermore, our design demonstrates scalability, as evidenced by the successful integration of a 20-nm-thick ScAlN layer, which supports high-density integration in future devices.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1107-1110"},"PeriodicalIF":4.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ziye Deng;Qi Li;Lanyi Liang;Pei Li;Yulong Liu;Li Guan;Xiaosong Hu
{"title":"Novel Fin-Shaped Drift SOI LDMOS Featuring Drift-All-Around Electron Accumulation Effect","authors":"Ziye Deng;Qi Li;Lanyi Liang;Pei Li;Yulong Liu;Li Guan;Xiaosong Hu","doi":"10.1109/LED.2025.3562701","DOIUrl":"https://doi.org/10.1109/LED.2025.3562701","url":null,"abstract":"This letter proposes a novel lateral double-diffused MOSFET based on a silicon-on-insulator (SOI) structure with a drift-all-around electron accumulation layer (EAL) (DAA-LDMOS). The DAA structure incorporates a self-adaptive potential region (SAP) surrounding a fin-shaped drift region, and a control electrode atop the SAP region. The potential existing in the SAP region and buried oxide (BOX) layer is perpetually higher than in the drift region, maintaining an unwavering potential differential, which introduces a 3D fully enclosed rectangular EAL in the drift region. Moreover, a control electrode can deftly modulate the intensity of the EAL to achieve the optimal accumulation effect. Consequently, the device possesses an extremely wide current path with ultralow resistance, dramatically decreasing the specific ON-resistance R<inline-formula> <tex-math>${}_{mathbf {textit {ON},textit {sp}}}$ </tex-math></inline-formula>. The simulation results show that the <inline-formula> <tex-math>${R} _{mathbf {textit {ON},textit {sp}}}$ </tex-math></inline-formula> of the DAA-LDMOS was reduced from 12.56m<inline-formula> <tex-math>$Omega $ </tex-math></inline-formula> cm<inline-formula> <tex-math>${}^{mathbf {{2}}}$ </tex-math></inline-formula> of the conventional LDMOS (Cov. LDMOS) without accumulation effect to 0.28 m<inline-formula> <tex-math>$Omega $ </tex-math></inline-formula> cm<inline-formula> <tex-math>${}^{mathbf {{2}}}$ </tex-math></inline-formula>, a reduction of 97.7% at the same breakdown voltage BV of 260 V. The figure-of-merit (FOM) of the DAA-LDMOS increased from 5.5 MW/cm<inline-formula> <tex-math>${}^{mathbf {{2}}}$ </tex-math></inline-formula> of the Cov. LDMOS to a record high of 237.7 MW/cm<inline-formula> <tex-math>${}^{mathbf {{2}}}$ </tex-math></inline-formula>, demonstrating an exceptional performance.","PeriodicalId":13198,"journal":{"name":"IEEE Electron Device Letters","volume":"46 7","pages":"1183-1186"},"PeriodicalIF":4.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}