Materials Research Bulletin最新文献

{"title":"A humidity tolerance and room temperature carbon soot@ZIF-71 sensor for toluene vapour detection","authors":"Lesego Malepe ,&nbsp;Tantoh Derek Ndinteh ,&nbsp;Patrick Ndungu ,&nbsp;Messai Adenew Mamo","doi":"10.1016/j.materresbull.2024.113076","DOIUrl":"10.1016/j.materresbull.2024.113076","url":null,"abstract":"<div><p>The Solid-state chemiresistive gas sensing devices are the desirable recruit to detect toxic gases and volatile organic compounds; however, the growth of real-life applications of these sensors is poor due to their drawbacks, including high working temperature, showing poor responses during moderate to high humidity, and poor selectivity towards the gas of interest. In this work, we synthesised zeolitic imidazolate framework (ZIF-71), carbon soot (CNPs) and CNPs@ZIF-71 composite and were successfully characterised using scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (PXRD), Raman spectroscopy, Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). The ZIF-71, CNPs and CNPs@ZIF-71 composites are used to fabricate the sensors to detect toluene, ethanol, mesitylene, diethyl ether and acetonitrile vapours at room temperature. The ZIF-71 did not respond to any of the tested VOCs at room temperature; however, the CNPs sensor showed some little response to the tested VOCs. However, the linear response was not observed as the analyte concentration increased. However, the CNPs@ZIF-71 showed excellent response and sensitivity towards the toluene vapour and less sensitivity towards mesitylene, diethyl ether, acetonitrile and ethanol vapours. ZIF-71 synergistically improves CNPs sensing performances on toluene vapour detection. The CNPs@ZIF-71 sensor was found to be highly resistive during the detection of toluene vapour. The calculated limit for the detection of toluene vapour on the CNPs@ZIF-71 composite sensor was 518 ppb. In situ, FTIR coupled with LCR meter online analysis was done to study the sensing mechanism, and it was found that toluene vapour detection on sensor 3 undergoes total deep oxidation to form H₂O and CO₂ as by-products.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113076"},"PeriodicalIF":5.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004070/pdfft?md5=215c2b53510e64f80014dd62df9a3a53&pid=1-s2.0-S0025540824004070-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-step densification and magneto-dielectric response of Y3Fe5O12–EDTA composites for microwave substrates","authors":"Rakhi Madhuri,&nbsp;Subodh Ganesanpotti","doi":"10.1016/j.materresbull.2024.113080","DOIUrl":"10.1016/j.materresbull.2024.113080","url":null,"abstract":"<div><p>Numerous studies have been conducted over the past few decades on energy-efficient, sustainable, and cost-effective materials and technologies for consumer electronics. Among such materials, ferrite-based compounds are expected to play a significant role in the miniaturization of circuits. However, densification of such materials is a very challenging problem. The cold sintering process (CSP) has recently been found as an alternative strategy for producing advanced materials, enabling their densification at low temperatures. The present work uses different volume fractions of Y₃Fe₅O₁₂ with EDTA to create a dense composite system. Here, we report the synthesis of composites of the formula (1 –<em>x</em>)Y₃Fe₅O₁₂-<em>x</em>EDTA (<em>x</em> = 0.2, 0.3, 0.4, 0.5) through CSP. These composites possess a permittivity of 6.4–7 combined with a loss tangent of 10^–2. Moreover, for the 0.5 EDTA composite, ε_r of 5.7 and tanδ of 0.01 are obtained at 10 GHz, suggesting the prepared composites' potential for substrate applications.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113080"},"PeriodicalIF":5.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004112/pdfft?md5=a33f24d8a0c82009e576944109be36d5&pid=1-s2.0-S0025540824004112-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the luminescent properties of Fe3+ in CaAl4O7 by co-doping with Bi3+ ions","authors":"W.M. Piotrowski ,&nbsp;D. Szymanski ,&nbsp;M. Crozzolin ,&nbsp;M. Back ,&nbsp;L. Marciniak","doi":"10.1016/j.materresbull.2024.113081","DOIUrl":"10.1016/j.materresbull.2024.113081","url":null,"abstract":"<div><p>In the framework of luminescent transition metal ions-doped phosphors for near-infrared (NIR) lighting, Fe³⁺-activated phosphors have been recently demonstrated to be a potential alternative to the most common Cr³⁺ and Ni²⁺-based NIR materials. However, this family of phosphors still suffer from low absorption efficiency and severe thermal quenching. This study investigates the effect of Bi³⁺ ion concentration on the spectroscopic features of Fe³⁺ ions in CaAl₄O₇:Fe³⁺, Bi³⁺ system. The presence of the ¹S₀→¹P₁ transition band in Fe³⁺ PLE spectra indicates the Bi³⁺→Fe³⁺ energy transfer leading to a corresponding increase in luminescence intensity of Fe³⁺ ions by over 30-fold compared to Fe³⁺-singly doped sample. High Bi³⁺ concentrations also quench Bi³⁺ ion luminescence, improving NIR emission purity. Additionally, the presence of Bi³⁺ ions enhances Fe³⁺ ion luminescence stability by delaying the thermal depopulation, as evidenced by a T₅₀ shift from 323 K to 393 K. Overall, co-doping CaAl₄O₇:Fe³⁺ with Bi³⁺ ions expands excitation spectra, boosts luminescence intensity, and enhances the thermal stability.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113081"},"PeriodicalIF":5.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004124/pdfft?md5=6dbf683eb778c3a1c84e119be933e6e6&pid=1-s2.0-S0025540824004124-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silicon/graphite/amorphous carbon composites as anode materials for lithium-ion battery with enhanced electrochemical performances","authors":"Hongquan Liu,&nbsp;Pengxin Duan,&nbsp;Zhenguo Wu,&nbsp;Yuao Liu,&nbsp;Zhengjuan Yan,&nbsp;Yanjun Zhong,&nbsp;Ye Wang,&nbsp;Xinlong Wang","doi":"10.1016/j.materresbull.2024.113082","DOIUrl":"10.1016/j.materresbull.2024.113082","url":null,"abstract":"<div><p>Silicon has emerged as one of the most promising anode materials for next-generation lithium-ion batteries due to its exceptional specific capacity and abundant resources. However, its widespread application is hindered by structural deformability and low intrinsic conductivity. By strategically integrating a conductive carbon matrix with silicon, it becomes feasible and efficient to enhance the electrical conductivity of silicon and accommodate the stress-induced volume expansion during battery operation. In this study, a series of silicon/graphite/amorphous carbon (Si/G/C) composites were prepared using mechanical milling and carbothermal reduction. The study focused on two main aspects: the effect of the ratio of micro-sized silicon to flake graphite on the properties of the composite and the compatibility of different-scale silicon particles (micro-sized silicon and nano-sized silicon) and different kinds of natural graphite (flake graphite and cryptocrystalline graphite). The results reveal that when micro-sized silicon and flake graphite are combined, the graphite is fragmented more thoroughly, resulting in smoother surfaces and reduced aggregation of secondary particles. The composites with a mass ratio of 7:3 micro-sized silicon to flake graphite have the smallest specific surface area and pore size, homogeneous distribution, and stable structure. This exceptional carbon-to-silicon ratio endows the Si/G/C composite with rapid reaction kinetics, enabling a specific discharge capacity of 854.1 mAh g^-1 after 200 cycles at 1A g^-1. The findings offer valuable insights into the design and optimization of silicon-based anode materials for next-generation lithium-ion batteries.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113082"},"PeriodicalIF":5.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004136/pdfft?md5=dedad225d35ea5f906f7cc77d7fcef9c&pid=1-s2.0-S0025540824004136-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface-modified copper foam for nitrate-to-ammonia and zinc-nitrate fuel cell catalysis","authors":"Pengcheng Ma ,&nbsp;Lingtian Lu ,&nbsp;Qianqian Wang ,&nbsp;Ran Bi ,&nbsp;Fang Chen ,&nbsp;Qiufan Tang ,&nbsp;Xiaoyan Ma","doi":"10.1016/j.materresbull.2024.113079","DOIUrl":"10.1016/j.materresbull.2024.113079","url":null,"abstract":"<div><p>Electrochemical reduction of nitrate to ammonia is a promising method for treating nitrate-containing wastewater and synthesizing high-value-added ammonia. However, the low catalytic efficiency of electrocatalysts and the complex process of catalyst preparation hinder the practical application and development of nitrate-to-ammonia conversion. In this work, Cu rearrangement on the surface of copper foam (CF) was achieved through a surface reconstruction engineering strategy, resulting in the construction of a high-performance NO₃RR electrocatalytic electrode (Cu@CF). Benefiting from the ideal structural advantages, the performance of Cu@CF in NO₃RR was significantly improved, with NH₃ production rates reaching up to 7.9 mg h^-1 cm^-2 and a Faradaic efficiency of 92.3%. Furthermore, the zinc-nitrate fuel cell assembled with Cu@CF and zinc foil also showed excellent fuel cell performance, with an output voltage of up to 1.4 V and power density of 3.9 mW cm^-2. This study has reference value for the development of efficient, stable and inexpensive NO₃RR electrodes.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113079"},"PeriodicalIF":5.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004100/pdfft?md5=9d061533ba3ac7836fb9a74559901874&pid=1-s2.0-S0025540824004100-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photosystem I enhanced perovskite–Organic tandem solar cell efficiency","authors":"Shahriar Mohammadi ,&nbsp;Sakineh Akbari Nia ,&nbsp;Barry D. Bruce ,&nbsp;Gholamhossein Riazi","doi":"10.1016/j.materresbull.2024.113077","DOIUrl":"10.1016/j.materresbull.2024.113077","url":null,"abstract":"<div><p>Tandem solar cells (TSC) have been introduced to better absorb the spectrum of sunlight and reduce optical loss. Among these, perovskite–organic tandem solar cells (P-OTSC) have emerged as a prominent topic over the last decade due to their complementary absorption spectrum. Additionally, incorporating diverse pigmented protein complexes in TSC fabrication is becoming more common. Natural chlorophyll-containing photosystems have garnered significant attention for their naturally solar-tuned absorption spectra. Photosystem I protein (PSI), is the most robust component of oxygenic photosynthesis and contains over 100 Chl <em>a</em> molecules/complex with two sharp absorbance peaks at 430 and 665 nm. PSI offers a second and complementary active layer because P-OTSCs often have a low extinction coefficient in the red wavelength region. In this research, the performance of P-OTSCs was enhanced by improving the absorption spectrum by utilizing an isolated plant PSI complex. The circuit current density (J_sc) increased from 14.23 mA/cm² to 14.95 mA/cm², and the power conversion efficiency (PCE) of P-OTSCs increased from 19.32 % to 20.24 %. We also observed that the external quantum efficiency (EQE) shows an apparent increase in the long wavelength region, reflecting the absorbance of light by PSI. This work is the first to report the integration of PSI into perovskite–organic tandem solar cells, and it motivates new design considerations that can further boost efficiency and utilize natural, earth-abundant pigment proteins.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113077"},"PeriodicalIF":5.3,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004082/pdfft?md5=2f9e326b904c5827a45033d988d215d1&pid=1-s2.0-S0025540824004082-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142149730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interface issues between cathode and electrolyte in sulfide-based all-solid-state lithium batteries and improvement strategies of interface performance through cathode modification","authors":"Chenglong Wang ,&nbsp;Yinglei Wu ,&nbsp;Sirui Wang ,&nbsp;Emile van der Heide ,&nbsp;Xiaodong Zhuang","doi":"10.1016/j.materresbull.2024.113078","DOIUrl":"10.1016/j.materresbull.2024.113078","url":null,"abstract":"<div><p>Sulfide electrolyte-based all-solid-state lithium batteries (ASSLB) are heralded as a cornerstone for next-generation energy storage solutions, distinguished by their exceptional ionic conductivity, superior energy density, and enhanced safety features. Nonetheless, the ascendancy of sulfide-based ASSLB in augmenting energy density and elongating cycle life is curtailed by the suboptimal solid-solid interfacial contact and the compromised chemical/electrochemical stability of both the cathode and the sulfide solid electrolyte (SSE). This review dissects the quintessential challenges at the cathode-SSE interface, elucidating the underlying mechanisms contributing to elevated interfacial resistance, the formation of space charge layers, and interfacial compatibility dilemmas. It addresses the primary challenges at the cathode-SSE interface, highlighting the mechanisms behind increased interfacial resistance, chemical/electrochemical instability, and poor interfacial compatibility. It systematically explores strategies to improve the interface, including microstructure regulation, coating cathode, synthesis modification, and other treatments. Finally, it summarizes the development prospects and improvement methods of sulfide-based ASSLB.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113078"},"PeriodicalIF":5.3,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004094/pdfft?md5=af7b2ba5e6d1b007ec4a0797af5b84f2&pid=1-s2.0-S0025540824004094-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142163070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Construction of cobalt-decorated Ag2WO4/g-C3N4 recombination-delayed nano-heterojunction for enhanced visible light photocatalytic activity","authors":"Leelavathi Harikrishnan ,&nbsp;Kumarasamy Alwar ,&nbsp;Arulmozhi Rajaram ,&nbsp;Mohanapriya Nagaraj","doi":"10.1016/j.materresbull.2024.113075","DOIUrl":"10.1016/j.materresbull.2024.113075","url":null,"abstract":"<div><p>The strong photo-induced charge separation /transfer plays an essential function in improving the photocatalysis efficiency of Ag₂WO₄ nanoparticles (AWO NPs). Herein, the novel Ag₂WO₄/Co/g-C₃N₄ (ACG) nanocomposite (NCs) was fabricated via the ultrasonic and facile co-precipitation approach for the assessment of photocatalytic activity. Physiological and photoelectrochemical techniques investigated the optical characteristics, phase structures, morphology, and charge separation of pristine and ACG NCs. The crystalline nature of the fabricated nanomaterials was verified by XRD and a selected area electron diffraction (SAED) pattern. According to the optical properties of ACG NCs, the particle has a band gap energy of 2.7 eV, which allows it to break down brilliant cresyl blue (BCB) in the existence of visible light (VL). The findings show that the photocatalytic degradation performance of ACG NCs for BCB (97.46%) was greater than that of individual g-C₃N₄ nanosheets (GCN NSs) (40.4%) and AWOs (58.78%). The produced photocatalyst exhibited an outstanding performance for the BCB dye degradation and the reaction mechanism obeyed the pseudo-first-order kinetics of the Langmuir-Hinshelwood model. Through a radical trapping experiment, it was determined that the ^•OH and ^•O₂ radicals were primarily accountable for the catalytic activity involved in the degradation of BCB. Six rounds of testing were used to examine the reusability of ACG NCs, and the reusable efficiency was 93.04%. The hazardous organic contaminants found in the environmental water bodies may be rapidly eliminated with the use of the produced NCs.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113075"},"PeriodicalIF":5.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004069/pdfft?md5=3d6c482810a052853d6b8ab14d58ad70&pid=1-s2.0-S0025540824004069-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142122479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scavenger-free solar photocatalytic degradation of Textile Dyes and Antibiotics using magnetically separable bi-junctional photocatalyst","authors":"Karan Menon ,&nbsp;Antony Dasint Lopis ,&nbsp;K.S. Choudhari ,&nbsp;Bhavana Kulkarni ,&nbsp;Sanjeev Maradur ,&nbsp;Suresh D. Kulkarni","doi":"10.1016/j.materresbull.2024.113074","DOIUrl":"10.1016/j.materresbull.2024.113074","url":null,"abstract":"<div><p>The field of solar photocatalysis has been plagued by photocatalysts with low photon-to-electron conversion efficiency, resulting in poor photocatalytic degradation rates of water pollutants. With a keen idea to improve the existing photocatalysts, we developed a scavenger-free, magnetically separable, bi-junctional solar photocatalyst. The photocatalyst comprises Fe²⁺ doped zinc ferrite as core, ZnO as shell, and irregular CuO nanoparticles in conjunction with the surface of core-shell nanoparticles prepared using a combination of microwave-assisted solvothermal technique and microwave-assisted reflux method. The photocatalytic degradation properties of the solar photocatalyst were modelled and optimized with the help of Methyl Orange under direct sunlight. This novel composite degrades Methyl Orange roughly four times faster than core-shell nanoparticles. The photocatalyst meets most of the criteria for working of a promising solar photocatalyst, such as 1) excellent absorption of sunlight, 2) two physically distinct heterojunction and absorbing regions for efficient charge carrier generation and separation, 3) scavenger-free degradation of textile dyes and antibiotics, 4) High surface area (39 m²g ⁻¹), 5) good stability, 6) excellent reusability, 7) and easy separation of nanoparticles for reuse with the help of a magnet. The prepared photocatalyst efficiently degrades fluoroquinolone antibiotics such as Ciprofloxacin Hydrochloride, Norfloxacin, and Ofloxacin. The photocatalyst demonstrates the capability to efficiently degrade textile dyes such as Methyl Orange, Methylene Blue, Orange G, Fluorescein sodium salt, Rhodamine B, and Crystal Violet. Additionally, the bi-junctional photocatalyst can be coated with a thin layer of silver to achieve twice the degradation rate. This enhancement is attributed to the Localized Surface Plasmon Resonance (LSPR) effect. The current work presents an effective and economical option for removing dyes and antibiotics in wastewater, marking a significant stride towards sustainable industrial practices.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113074"},"PeriodicalIF":5.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004057/pdfft?md5=ba437d31431b4c3906908f47438fc40e&pid=1-s2.0-S0025540824004057-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142135926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced photoconductivity via photon down-conversion by incorporation of solution-processed 3C-SiC QDs on nanostructured black silicon","authors":"Abdulmutolib O. Olaoye ,&nbsp;Sani Muhammad ,&nbsp;M. Hazwan Hussin ,&nbsp;Mohd Zamir Pakhuruddin ,&nbsp;Md. Roslan Hashim ,&nbsp;Marzaini Rashid","doi":"10.1016/j.materresbull.2024.113072","DOIUrl":"10.1016/j.materresbull.2024.113072","url":null,"abstract":"<div><p>Colloidal quantum dots (CODs) have attracted attention towards the next-generation optoelectronic devices capable of tuning the bandgap to capture photons at the UV region which is the major impediment of silicon (Si) for optoelectronic applications. However, CODs convert higher-energy photons into lower-energies photons through spectral down-conversion to UV visible. This study describes the photoconductivity effects of colloidal 3C-SiC QDs onto the underlying black silicon (b-Si) for spectral down-conversion effect. The Si showed a remarkable decrease in broadband reflectance after being etched to b-Si via metal-assisted chemical etching (MACE) over a broad spectral wavelength range of 300–1100 nm. Incorporating QDs onto underlying b-Si enhanced the device responsivity from 0.034 A/W to 0.53 A/W with the formation of space charge through the down-conversion effect. Furthermore, the photovoltaic measurements demonstrate the superior performance of hybrid colloidal 3C-Si QDs/b-Si with a power conversion efficiency (PCE) of ∼7.28 % compared to b-Si without QDs (5.57 %) photovoltaic cells. Our research provides insight into the down-conversion effects of colloidal 3C-SiC QDs for photovoltaic and photodetector applications.</p></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113072"},"PeriodicalIF":5.3,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0025540824004033/pdfft?md5=50d0058e2a1b953958b8ee12161dcfb6&pid=1-s2.0-S0025540824004033-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}