Atul Kumar*, Divya Tripathi, Ravindra Kumar Rawat* and Pratima Chauhan*,
{"title":"Hybrid MoS2/PEDOT:PSS Sensor for Volatile Organic Compounds Detection at Room Temperature: Experimental and DFT Insights","authors":"Atul Kumar*, Divya Tripathi, Ravindra Kumar Rawat* and Pratima Chauhan*, ","doi":"10.1021/acsanm.4c0561410.1021/acsanm.4c05614","DOIUrl":"https://doi.org/10.1021/acsanm.4c05614https://doi.org/10.1021/acsanm.4c05614","url":null,"abstract":"<p >This work emphasizes the gas sensing capabilities of MoS<sub>2</sub>/PEDOT:PSS nanohybrid-based sensors, offering a prominent candidate for detecting volatile organic compounds (VOCs) at room temperature. The MoS<sub>2</sub>/PEDOT:PSS composite material is synthesized by combining commercial PEDOT:PSS with MoS<sub>2</sub> produced via hydrothermal synthesis using ultrasonication for mechanical mixing. Further, the pristine PEDOT:PSS, MoS<sub>2</sub>, and MoS<sub>2</sub>/PEDOT:PSS samples were extensively characterized using various techniques to obtain detailed information about their structural, compositional, and morphological properties. The study reveals that the MoS<sub>2</sub>/PEDOT:PSS composite exhibited the highest sensitivity among the tested materials with a 56.29% response at 500 ppm of ethanol. The response of the MoS<sub>2</sub>/PEDOT:PSS sensor increases from 12.24% to 56.29% as the concentration of analyte gas increases from 25 to 500 ppm. Also, repeatability-, sensitivity-, and humidity-based analyses were performed for the evaluation of the sensor. The response and recovery times of the MoS<sub>2</sub>/PEDOT:PSS nanohybrid sensor are 8.2 and 2.5 s, respectively. The repeatability analysis demonstrated stable performance across multiple tests with percent deviations of ±0.04 for PEDOT:PSS, ± 0.35 for MoS<sub>2</sub>, and ±0.08 for MoS<sub>2</sub>/PEDOT:PSS under ambient conditions. The computational study reveals that the EDOT:SS/MoS<sub>2</sub> (002) composite exhibits strong oxygen adsorption energies of −11.61 eV, indicating enhanced adsorption capabilities. In contrast, MoS<sub>2</sub> (002) and PEDOT:PSS show lower energies of −9.22 and −11.08 eV, respectively. Additionally, VOC adsorption on oxygen preadsorbed EDOT:SS/MoS<sub>2</sub> (002) shows methanol and ethanol with strong affinities, while toluene and hexane exhibit weaker interactions. These computational findings highlight and support the potential of the MoS<sub>2</sub>/PEDOT:PSS composite for gas sensing applications.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27599–27611 27599–27611"},"PeriodicalIF":5.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xuran Ma, Zhiguo Zhu, Qingting Dong, Tianran Kong, Xiaofan Li*, Ting Su, Bowen Huang*, Hongying Lü and Kaixuan Yang*,
{"title":"Co@Pd–Co Core–Shell Nanoparticles as Catalysts for the Selective Hydrogenation of Furfural to Furfuryl Alcohol","authors":"Xuran Ma, Zhiguo Zhu, Qingting Dong, Tianran Kong, Xiaofan Li*, Ting Su, Bowen Huang*, Hongying Lü and Kaixuan Yang*, ","doi":"10.1021/acsanm.4c0470310.1021/acsanm.4c04703","DOIUrl":"https://doi.org/10.1021/acsanm.4c04703https://doi.org/10.1021/acsanm.4c04703","url":null,"abstract":"<p >The surface structure of bimetallic catalysts is critical in determining their performance in hydrogenation reactions. In this study, we have developed a deep eutectic solvent-assisted solvothermal method to synthesize a highly efficient Pd<sub>0.1</sub>Co/CNTs-DES-40 nanocatalyst with a Co@Pd–Co core–shell structure. This Pd<sub>0.1</sub>Co/CNTs-DES-40 nanocatalyst demonstrated superior catalytic performance in the selective hydrogenation of furfural (FAL) to furfuryl alcohol (FOL) compared to other Pd–Co/CNT nanocatalysts with different structures (Janus type and alloy type), which were synthesized using successive impregnation and coimpregnation methods. The highest >99% FOL yield was achieved over the Pd<sub>0.1</sub>Co/CNTs-DES-40 catalyst. The arrangement of Pd and Co species in these systems was fully characterized, and detailed characterization revealed that the Co@Pd–Co core–shell nanostructure significantly increased the exposure of active sites and enhanced hydrogen adsorption and activation. Stability tests indicated a slight decrease in activity after six cycles, primarily due to the deposition of carbonaceous species and nanoparticle growth. This work highlights the importance of catalytic structure design for bimetallic catalysts in the selective hydrogenation of biomass-derived platform molecules and provides a strategy for synthesizing bimetallic catalysts.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26825–26835 26825–26835"},"PeriodicalIF":5.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mina Yoon*, German D. Samolyuk, Kai Li, James Haynes and Tolga Aytug*,
{"title":"First-Principles Calculations of the Electrical Conductivity of Carbon Nanotubes Functionalized with Copper and Nitrogen: Implications for Electronics, Energy Storage, and Nanodevices","authors":"Mina Yoon*, German D. Samolyuk, Kai Li, James Haynes and Tolga Aytug*, ","doi":"10.1021/acsanm.4c0450010.1021/acsanm.4c04500","DOIUrl":"https://doi.org/10.1021/acsanm.4c04500https://doi.org/10.1021/acsanm.4c04500","url":null,"abstract":"<p >In this work, we investigate the electrical conductivity of carbon nanotubes (CNTs), with a particular focus on the effects of doping. Using first-principles-based approaches, we study the electronic structure, phonon dispersion, and electron–phonon scattering to understand the finite-temperature electrical transport properties in CNTs. Our study covers both prototypical metallic and semiconducting CNTs, with special emphasis on the influence of typical defects such as vacancies and the incorporation of copper or nitrogen, such as pyridinic N, pyrrolic N, graphitic N, and oxidized N. Our theoretical study shows significant improvements in the electrical conduction properties of copper-CNT composites, especially when semiconducting CNTs are functionalized with nitrogen. Doping is found to cause significant changes in the electronic density of states near the Fermi level, which affects the electrical conductivity. Calculations show that certain types of functional groups, such as N-pyrrolic, result in more than 30-fold increase in the conductivity of semiconducting CNTs compared to Cu-incorporated CNTs alone. For metallic CNTs, the conductivity is in agreement with existing experimental data, and our prediction of significant increases in conductivity with N-pyrrolic functional group is consistent with recent experimental results, demonstrating the effectiveness of doping in modifying conductivity. Our study provides valuable insight into the electronic properties of doped CNTs and contributes to the development of ultrahigh conductivity CNT composites.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26777–26784 26777–26784"},"PeriodicalIF":5.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"GSH-pH dual-responsive engineered codoped Prussian blue multimodal theranostic nanoplatform induces TP53 deregulated apoptotic death of MDA-MB-231 with enhanced T1 - T2W MRI","authors":"Panchanan Sahoo, Sourav Kumar Nandi, Mandira Das, Sudip Kundu, Riya Roy, Sayan Kumar Bag, Kanchan Kumar Kole, Arunabha Thakur, Jiten Ghosh, Abhishek Mukherjee* and Chandan Kumar Ghosh*, ","doi":"10.1021/acsanm.4c0555610.1021/acsanm.4c05556","DOIUrl":"https://doi.org/10.1021/acsanm.4c05556https://doi.org/10.1021/acsanm.4c05556","url":null,"abstract":"<p >Though chemotherapy is an effective clinical treatment, individual drugs hardly achieve precise controlled release, causing unavoidable severe side effects due to off-targeting in the absence of any receptor of triple negative breast cancer (TNBC). Fortunately, the emergence of on-demand drug-release nanoparticles allows potential alternatives to overcome the limitation. In this work, a dual-responsive multimodal theranostic targeted smart nanoplatform has been prepared by employing mesoporous silica (mSiO<sub>2</sub>)-coated Dy<sup>3+</sup>, Gd<sup>3+</sup>-codoped Prussian blue nanocubes (PBNCs) with CytC as a gatekeeper to seal pores of mSiO<sub>2</sub> via disulfide and boronate ester bonds as intermediate linkers for intracellular high glutathione, and acidic pH responsive drug release. Hyaluronic acid has been used as a targeting motif, facilitating the uptake of our synthesized nanoplatform, wherein a cumulative drug-release profile demonstrated that the nanoplatform exhibits very low sustained drug release at pH 7.0 (∼20% in 25 h), while the release gets accelerated at pH 5.0 and 8.0 mM GSH (∼60% in 25 h), realizing the “trigger release” of drug. The nanoplatform possesses excellent biocompatibility to HEK 293 cells, while it has high cytotoxicity (∼67%) toward TNBC (IC<sub>50</sub> = 35.8 μM), ascribed to synergistic chemo-phototherapeutic effect. An <i>in silico</i> analysis, followed by immunocytochemical studies illustrate that the down-regulated TP53-BAX/BCL2 and upregulated CASP3 CYTS networks initiate an apoptotic cell-death mechanism. In addition, the nanoplatform exhibits potency as a dual-mode MRI contrast agent with high relaxivity (<i>r</i><sub>1</sub> and <i>r</i><sub>2</sub>) values of ∼7.84 and ∼29.3 mM<sup>–1</sup> s<sup>–1</sup>, which will be highly facilitating for the diagnosis and tracking of TNBC management for personalized medicine.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26617–26628 26617–26628"},"PeriodicalIF":5.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaoli Ran, Yang Bai, Hao Zeng, Junhao Zhang, Haitao Fu*, Xizhong An and Xiaohong Yang*,
{"title":"Manipulating Oxygen Vacancy in SrTiO3 Nanoparticles to Achieve Enhanced Photoelectrochemical Performance in Water Splitting","authors":"Xiaoli Ran, Yang Bai, Hao Zeng, Junhao Zhang, Haitao Fu*, Xizhong An and Xiaohong Yang*, ","doi":"10.1021/acsanm.4c0555810.1021/acsanm.4c05558","DOIUrl":"https://doi.org/10.1021/acsanm.4c05558https://doi.org/10.1021/acsanm.4c05558","url":null,"abstract":"<p >Introducing oxygen vacancies into perovskite-type SrTiO<sub>3</sub> nanoparticles usually takes dual or multiple steps, which are not conducive to subsequent modification and application. Herein, a facile nonstoichiometric method is applied to synthesize a series of oxygen vacancy (V<sub>O</sub>)-doped SrTiO<sub>3</sub> (Sr<sub>1–<i>X</i></sub>TiO<sub>3</sub><sub>–δ</sub>) as a photoanode material in photoelectrochemical (PEC) water-splitting reactions. Experimental results reveal a nonlinear relationship between the PEC performance and V<sub>O</sub> concentration in SrTiO<sub>3</sub> nanoparticles. Sr<sub>1–<i>X</i></sub>TiO<sub>3</sub><sub>–δ</sub> doped with an appropriate amount of V<sub>O</sub> can significantly enhance its light response and electrocatalytic activity. The optimal Sr<sub>0.95</sub>TiO<sub>3</sub><sub>–δ</sub> demonstrated the best PEC activity with an incident photon-to-current conversion efficiency of 3.144 times higher than that of pristine SrTiO<sub>3</sub>. Enhanced PEC activity is attributed to superior light absorption and retarded photogenerated charge carrier recombination. This work systematically reveals the role of oxygen vacancies in SrTiO<sub>3</sub> nanoparticles for achieving enhanced PEC performance in water splitting, which may offer inspiration for defect engineering of perovskite oxides.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27543–27554 27543–27554"},"PeriodicalIF":5.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaoshi Lang, Yujing Su, Runna Shi, Tan Wang, Tingting Qu, Qiushi Wang, Lan Li, Chuangang Yao and Kedi Cai*,
{"title":"P-Type Cross-Linked Silicon Nanocomposites for Improving the Lithium-Ion Deinsertion from Anode Materials of Lithium-Ion Batteries","authors":"Xiaoshi Lang, Yujing Su, Runna Shi, Tan Wang, Tingting Qu, Qiushi Wang, Lan Li, Chuangang Yao and Kedi Cai*, ","doi":"10.1021/acsanm.4c0502310.1021/acsanm.4c05023","DOIUrl":"https://doi.org/10.1021/acsanm.4c05023https://doi.org/10.1021/acsanm.4c05023","url":null,"abstract":"<p >Silicon has been an extremely popular anode active material owing to its rather high theoretical specific capacity; however, volume distension and the generation of an unstable SEI film during the lithium insertion and deinsertion process severely limit its commercial development. Herein, a type of P-type cross-linked Si semiconductor rich in hole carrier nanocomposite (Si@SiC@PF) on the basis of B doping is synthesized via a facile vacuum direct current arc combined along with a high-temperature solid phase method. B doping can transform Si into a stable P-type semiconductor with a large number of hole carriers so as to effectively accelerate electron conduction on the Si surface and improve the deinsertion efficiency of lithium ions. In addition, we also discover that B doping also can optimize the distribution of SiC with a strong Si–C bond energy to allow it to aggregate on the surface of Si, resulting in the growth of the hierarchical structure, thus better exerting its buffering effect. Then, coating amorphous carbon through pyrolyzing phenolic resin (PF) can improve the conductivity of the composite material while providing ample space for accommodating the volume expansion of Si and forming a stabilized SEI film. As an anode active material for lithium-ion batteries, the specific discharge capacity still remains at 1272 mAh·g<sup>–1</sup> after 300 cycles.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27040–27051 27040–27051"},"PeriodicalIF":5.3,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Hierarchical NiFe-Layered Double Hydroxide Coupled with Bimetallic NiFe-MOF Electrocatalysts for the Oxygen Evolution Reaction","authors":"Weipeng Wang, Chunbo Liu, Jihui Lang, Tianyu Zhou, FeiFan Guo, Wei Jiang, Jingdong Feng, Xiaotian Yang*, Guangbo Che* and Yuanyuan Wu*, ","doi":"10.1021/acsanm.4c0481510.1021/acsanm.4c04815","DOIUrl":"https://doi.org/10.1021/acsanm.4c04815https://doi.org/10.1021/acsanm.4c04815","url":null,"abstract":"<p >It is crucial to utilize extremely efficient and economical catalysts for the energy-intensive and kinetically slow oxygen evolution process. Here, we fabricated a NiFeLDH coupled with the NiFe-MOF catalyst with a unique hierarchical structure using a facile and rapid electrodeposition and electrochemical activation strategy. With a low overpotential of about 187 mV at 10 mA cm<sup>–2</sup>, the NiFeLDH/NiFe-MOF/NF demonstrates exceptional stability for more than 1000 h. Additionally, the produced NiFeLDH/NiFe-MOF/NF could provide high current densities of 500 and 1000 mA cm<sup>–2</sup> in 6 M KOH at relatively low overpotentials of 293 and 353 mV, respectively. The construction of heterojunctions provides abundant interfacial active sites and optimizes catalytic activity by adjusting the surface electronic structure and energy levels. This serves to enhance the intrinsic activity of the catalyst. Density functional theory (DFT) calculations further prove that the construction of NiFeLDH regulates the band structure of metal sites, enhances the catalytic performance for the oxygen evolution reaction (OER), and lowers the intermediate medium’s adsorption free energy.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"26863–26872 26863–26872"},"PeriodicalIF":5.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xin Li, Qi-Wen Ma, Guangning Yu, Ji Shi, Hai-Yang Chang, Rong-Rong Zheng*, Hengxue Xiang* and Cheng Wang*,
{"title":"In Situ Construction of Ultra-Stable CsPbX3/DMSNs-NH2 Nanocomposites for White Light-Emitting Devices","authors":"Xin Li, Qi-Wen Ma, Guangning Yu, Ji Shi, Hai-Yang Chang, Rong-Rong Zheng*, Hengxue Xiang* and Cheng Wang*, ","doi":"10.1021/acsanm.4c0525210.1021/acsanm.4c05252","DOIUrl":"https://doi.org/10.1021/acsanm.4c05252https://doi.org/10.1021/acsanm.4c05252","url":null,"abstract":"<p >All-inorganic halide perovskite (CsPbX<sub>3</sub>) nanocrystals (NCs) have garnered significant attention due to their excellent photoelectric properties. However, their practical application has been limited by stability issues. This study presents a strategy combining physical confinement through a carrier matrix and chemical bond coupling to enhance the stability of CsPbX<sub>3</sub> NCs significantly under UV irradiation, polar solvents, and thermal conditions. Specifically, CsPbBr<sub>3</sub> NCs exhibited near-complete fluorescence quenching within 300 min when treated with water and ethanol. In contrast, CsPbBr<sub>3</sub>/DMSNs-NH<sub>2</sub> nanocomposites retained 86.9% and 75.4% of their initial photoluminescence intensity after 7 days. This enhanced stability is attributed to the multilevel pore architecture of DMSNs-NH<sub>2</sub>, which effectively prevents direct interaction with water and oxygen. Furthermore, bright white light-emitting diode (LED) devices were successfully fabricated using these nanocomposites, achieving a color temperature of 6045 K and a color gamut covering 133.5% of NTSC and 99% of Rec.2020 standards. This work demonstrates a promising pathway for the development of stable, high-performance perovskite-based optoelectronic devices.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27254–27263 27254–27263"},"PeriodicalIF":5.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zifan Xiao, Chong Chen, Ge Xiao, Yun Jiang, Xiaomi Lu, Yu Wang*, Bin Ai* and Gang Zhang*,
{"title":"Correction to “Customization of Nanogap Arrays Using Stereolithography and Nanoskiving for Surface-Enhanced Raman Scattering”","authors":"Zifan Xiao, Chong Chen, Ge Xiao, Yun Jiang, Xiaomi Lu, Yu Wang*, Bin Ai* and Gang Zhang*, ","doi":"10.1021/acsanm.4c0615710.1021/acsanm.4c06157","DOIUrl":"https://doi.org/10.1021/acsanm.4c06157https://doi.org/10.1021/acsanm.4c06157","url":null,"abstract":"","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27794 27794"},"PeriodicalIF":5.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ratmir V. Ustimenko*, Maxim Ya. Vinnichenko*, Danila A. Karaulov, Hayk A. Sarkisyan, David B. Hayrapetyan and Dmitry A. Firsov,
{"title":"Effect of Doping and Interband Pumping on the Optical Properties of GeSi/Si Quantum Dot Nanostructures for Infrared Detectors","authors":"Ratmir V. Ustimenko*, Maxim Ya. Vinnichenko*, Danila A. Karaulov, Hayk A. Sarkisyan, David B. Hayrapetyan and Dmitry A. Firsov, ","doi":"10.1021/acsanm.4c0525110.1021/acsanm.4c05251","DOIUrl":"https://doi.org/10.1021/acsanm.4c05251https://doi.org/10.1021/acsanm.4c05251","url":null,"abstract":"<p >Nanostructures with quantum dots based on GeSi solid solution are promising for the development of optoelectronic devices compatible with modern silicon technology. In this paper, we demonstrate the capabilities of such nanostructures for detecting infrared and terahertz radiation. The working spectral range of nanostructures with GeSi/Si QDs is determined by the energy position of hole levels in the QDs, which is calculated using the quantum box model and confirmed by experimentally measuring the spectra of photoinduced intraband absorption of radiation. Using time-resolved spectroscopy, we found the characteristic times that determine the speed of the detection process associated with the processes of capture and recombination of charge carriers.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"7 23","pages":"27245–27253 27245–27253"},"PeriodicalIF":5.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}