Journal of Materials Chemistry C
·
2020
·Vol. 8
·期 7
·2436-2441
·
IF 7.059
Li Jiang,Yuwei Li,Jiali Peng,Lihao Cui,Ruiming Li,Yalun Xu,Wei Li,Yanyan Li,Xiaoyu Tian,Qianqian Lin
Chalcogenides have attracted great attention in the past few decades because of their excellent processability and outstanding optoelectronic properties. Particularly, AgBiS2 has been the frontier of the photovoltaic field in the past few years. AgBiS2 possesses fascinating merits, such as a high absorption coefficient, suitable bandgap, decent charge transport properties and superior material stability. However, most of the efficient AgBiS2-based devices are fabricated with AgBiS2 quantum dots, which require long fabrication time and complicated synthetic steps. Moreover, most of the reports focused on photovoltaic devices, and AgBiS2-based photodetectors have not been reported yet. Based on the challenges listed above, we developed AgBiS2 photodetectors based on a molecular precursor method with a p–i–n device structure. These photodetectors exhibited broadband spectral response with decent detectivity and fast response time of 700 ns. In addition, these devices also demonstrated outstanding air, light and water stability.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
Micromachines
·
2023
·Vol. 14
·期 12
·2211
·
IF 3.4
Wenzhen Wang,Chengxiong Gao,Yuxing Chen,Tao Shen,Mingrong Dong,Bo Yao,Yan Zhu
The ternary chalcogenide AgBiS2has attracted widespread attention in the field of photovoltaic and photoelectric devices due to its excellent properties. In this study, AgBiS2powders with an average diameter of 200 nm were prepared via a simple and convenient reflux method from silver acetate, bismuth nitrate pentahydrate, and n-dodecyl mercaptan. The adjustment of the ratios of Ag:Bi:S raw materials and of the reaction temperatures were carried out to investigate the significance of the synthesis conditions toward the composition of the as-synthesized AgBiS2. The results of XRD indicated that the powders synthesized at a ratio of 1.05:1:2.1 and a synthesis temperature of 225 °C have the lowest bismuth content and the highest purity. The synthesized AgBiS2crystallizes in a rock salt type structure with the cubicFm3¯mspace group. Scanning and transmission electron microscopy, thermogravimetric analysis, ultraviolet–visible–near-infrared spectra, and photocatalytic degradation performance were employed to characterize the as-synthesized samples. The results demonstrated that AgBiS2powders display thermal stability; strong absorption in the ultraviolet, visible, and partial infrared regions; and an optical bandgap of 0.98 eV. The obtained AgBiS2powders also have a good degradation effect on the methylene blue solution with a degradation efficiency of 58.61% and a rate constant of 0.0034 min−1, indicating that it is an efficient strategy for sewage degradation to reduce water pollution.Keywords:AgBiS2;reflux method;photocatalytic degradation
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 21
·3742
·
IF 5.719
Qiao Li,Xiaosong Zheng,Xiaoyu Shen,Shuai Ding,Hongjian Feng,Guohua Wu,Yaohong Zhang
Colloidal AgBiS2nanocrystals (NCs) have attracted increasing attention as a near–infrared absorbent materials with non–toxic elements and a high absorption coefficient. In recent years, colloidal AgBiS2NCs have typically been synthesized via the hot injection method using hexamethyldisilathiane (TMS) as the sulfur source. However, the cost of TMS is one of the biggest obstacles to large–scale synthesis of colloidal AgBiS2NCs. Herein, we synthesized colloidal AgBiS2NCs using oleylamine@sulfur (OLA–S) solution as the sulfur source instead of TMS and optimized the synthesis conditions of colloidal AgBiS2NCs. By controlling the reaction injection temperature and the dosage of OLA–S, colloidal AgBiS2NCs with adjustable size can be synthesized. Compared with TMS–based colloidal AgBiS2NCs, the colloidal AgBiS2NCs based on OLA–S has good crystallinity and fewer defects.Keywords:AgBiS2;colloidal nanocrystals;hot injection;sulfur source
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 24
·7583-7590
·
IF 7.393
Li Jiang,Huihuang Huang,Fubing Gui,Yalun Xu,Qianqian Lin
In recent years, AgBiS2 has received great attention in optoelectronics thanks to its fascinating merits, including a suitable bandgap, large absorption coefficient from ultraviolet to near-infrared and remarkable material stability. However, the poor carrier transport properties limit its further development and applications. To address this issue, we propose a composite strategy to facilitate the carrier transport of AgBiS2 QD films. The AgBiS2–organic hybrid films demonstrated enhanced photoconductivity. Then, we fabricated phototransistors based on these blend films, and achieved a high photosensitivity (Ilight/Idark) of 1.5 × 103, a decent responsivity of up to 20 A W−1, an excellent specific detectivity of 4 × 1013 Jones under low UV illumination and remarkable device stability. These results again demonstrate the great potential of AgBiS2 for next generation solution-processed photodetectors.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2024
·
IF 3.2
Jiang Cheng,Shun Wu,Xingwu Yan,Yanqiao Hu,Tao Zhang,Guishan Tu,Hua Tang,Xiang Meng,Shenghao Wang,Lu Li
AgBiS2 nanocrystal films exhibit promising semiconductive properties when utilized in photovoltaic devices. However, theoretical calculations reflect a metallic band structure. Therefore, the inherent characteristics of this material have yet to be well understood. In the present work, large-scale and high-quality AgBiS2 monocrystals (φ20 × 45 mm3) have been successfully grown and utilized to reveal their band structures and opto-electrical properties. Both semiconducting and metallic properties were observed in bulk AgBiS2 single crystals, as evidenced by the performance of photoconductive and heterojunction photodetectors, respectively. Notably, the heterojunction device demonstrates a significant responsivity (5.03 mA W–1), a high detectivity (3.8 × 109 Jones), and a swift millisecond-level response time at 1920 nm. These findings suggest that semimetallic single crystals can also be an excellent candidate material for photodetection. The special properties make it have broad application prospects in high-performance long-wave infrared detection.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2024
·Vol. 12
·期 14
·3481-3493
·
IF 6.1
Ting Liu,Kangkang Huang,Yuxia Yang,Shengwu Wen,Jingxian Zhang,Suiping Deng,Shaozao Tan,Langhuan Huang
Bacterial infection is the most common risk factor that causes the failure of implantation surgery. Therefore, the development of biocompatible implants with excellent antibacterial properties is of utmost importance. In this study, NIR light-driven AgBiS2@ZIF-8 hybrid photocatalysts for rapid bacteria-killing were prepared. AgBiS2@ZIF-8 exhibited excellent photocatalytic activity due to the rapid transfer of photoelectrons from AgBiS2 to ZIF-8, resulting in abundant reactive oxygen species (ROS) to kill bacteria. Meanwhile, AgBiS2@ZIF-8 exhibited a noteworthy photothermal effect, which could effectively convert NIR light into heat. Subsequently, the NIR light-driven antibacterial activity of AgBiS2@ZIF-8/Ti against S. aureus and E. coli was studied. The experimental results showed that AgBiS2@ZIF-8 displayed enhanced photodynamic therapy (PDT) and photothermal therapy (PTT) performance. Under irradiation with 808 nm NIR light for 10 min, AgBiS2@ZIF-8/Ti could effectively eliminate 98.55% of S. aureus in vitro, 99.34% of E. coli in vitro and 95% S. aureus in vivo. At the same time, AgBiS2@ZIF-8/Ti had good biocompatibility. Therefore, AgBiS2@ZIF-8/Ti showed potential as an antibacterial material, which provided a strategy to fight polymicrobial infections.
研究领域:
材料科学
·
生物医学工程
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2020
·
IF 0.936
Xiao-Xue SHI,Xiu-Qi LI,Xiao-Ping WEI,Jian-Ping LI
A molecularly imprinted photoelectrochemical sensor based on AgBiS 2 /Bi 2 S 3 was developed for detection of insecticide propoxur. AgBiS 2 /Bi 2 S 3 composites were synthesized on Ti substrate by solvothermal method. By using propoxur as a template molecule and o -phenylenediamine as a functional monomer, a molecularly imprinted polymer film was formed by electropolymerization on AgBiS 2 /Bi 2 S 3 composite material-modified Ti electrode for specific recognition of propoxur. The specific binding of propoxur with the imprinted cavity hindered the electron donor from passing through the cavity to the surface of the electrode, resulting in a decrease in photocurrent, and then propoxur was detected. The logarithm of the concentration of propoxur was linear with the photocurrent in the range of 1.0 × 10 −12 −5.0 × 10 −10 mol/L, and the detection limit was 2.3 × 10 −13 mol/L. The sensor was used for detection of propoxur residues in actual sample such as fruits, and the recoveries of the spiked standard were 101.0%–;103.1%.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2025
·
IF 15.6
Kin Ting Chang,Wenfei Liang,Shaokuan Gong,Pang Ho Yeung,Jianning Feng,Xihan Chen,Haipeng Lu
Colloidal semiconductor nanocrystals (NCs) have recently emerged as ideal triplet sensitizers owing to their diverse material composition and spectral tunability. However, the NCs that can efficiently sensitize near-infrared-to-visible photon upconversion remain largely limited to toxic lead-based NCs. Here, we present a new lead-free, near-infrared, indirect-bandgap sensitizer based on AgBiS2 NCs, enabling near-infrared-to-yellow upconversion with a quantum yield reaching 10.5% (normalized to 100%). The key to success is the precise stoichiometry control of AgBiS2 NCs, which provides the essential surface states for both radiative recombination and triplet energy transfer. Ultrafast transient absorption spectroscopy verifies the efficient triplet energy transfer mechanism mediated by surface states. Our work presents a new eco-friendly material system for efficient triplet fusion near-infrared photon upconversion.
研究领域:
材料科学
·
光学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2024
·
IF 5.8
Yu Miao,Zhuoran Wang,Zhongming Wei,Guozhen Shen
Patterning of functional nanomaterials shows a promising path in advanced fabrication of electronic and optoelectronic devices. Current micropatterning strategies are indispensable of post-etching/lifting-off processes that contaminate/damage the functional materials. Here, we develop an innovative, low-temperature, post-lift-off-free, seeds-confined fabricating strategy that can tackle this issue, thus achieving designated patterns of flower-shaped AgBiS2 nanostructures at either micro- or macroscale on arbitrary substrates that are either regid or flexible. Made of patterned AgBiS2 nanostructures, the photoconductor shows broadband (320 nm-2200 nm), sensitive (Rpeak = 1.56 A/W), and fast (less than 100 μs) photoresponses. Further, single-pixel raster-scanning and 28 × 12 focal plane array imaging are performed to demonstrate reliable and resolved electrical responses to optical patterns, showing potential in practical imaging applications. Notably, the patterning process enables strain-releasing micro-structures, which lead to the fabrication of a flexible photodetector with high durability upon over 1000 bending/recovering testing loops. This work provides a simple, low-temperature and eco-friendly strategy to address the current challenges in non-aggressive micro-fabrications and arbitrary patterning of semiconductors, which are promising to meet the development of further emerging technologies in scalable and wearable optoelectronic sensors.
研究领域:
材料科学
·
光电技术
·
纳米科技
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 41
·8514-8524
·
IF 7.571
Qi Xu,Jiarui Wu,Yiming Feng,Han Hu,Zhimin Mo,Zushun Xu,Hewei Li,Shengli Yang
Sonodynamic therapy (SDT) is a non-invasive treatment, preferred by many researchers. Ultrasound is applied to tumor lesions, enriched with a sound sensitizer. The activation of the sound sensitizer produces reactive oxygen species (ROS), which kill the tumor cells. In this study, raspberry-like AgBiS2@PVP nanoparticles (NPs) were prepared, which were modified with polyvinylpyrrolidone (PVP). Finally, AgBiS2@PVP NPs with 261 nm diameter and a suitable band gap were successfully synthesized. These NPs could play a role in SDT by generating ROS when induced by ultrasonic stimulation. Moreover, the AgBiS2@PVP NPs could also catalyze H2O2 in the tumor microenvironment to produce ˙OH, equipping the NPs with chemodynamic therapy (CDT) properties. In vivo and in vitro experiments suggested that, compared to the single treatments, the combination of SDT and CDT had a clearer inhibitory effect on tumor cells.
研究领域:
纳米技术
·
癌症治疗
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomaterials Science
·
2019
·Vol. 7
·期 11
·4769-4781
·
IF 5.251
Mingdi Sun,Dan Yang,Chen Wang,Huiting Bi,Yuan Zhou,Xiangxi Wang,Jiating Xu,Fei He,Shili Gai,Piaoping Yang
808 nm near-infrared (NIR) light-induced biological theranostics is gradually becoming a popular method for cancer treatment. Meanwhile, mild synthetic methods to prepare medicines and gentle treatment conditions for cancer patients are becoming increasingly important to oncotherapy. Herein, tiny AgBiS2 nanodots were synthesized via a simple method, and for the first time, discovered to produce a photodynamic therapy (PDT) effect for cancer treatment under 808 nm laser irradiation, which was characterized by both chemical probe and intracellular reactive oxygen species (ROS) detection. Subsequently, because tumor cells have more mitochondria than normal cells to generate more energy to maintain rapid growth for population expansion, and triphenylphosphonium (TPP) can transport tiny nanoparticles into the mitochondria, the as-synthesized AgBiS2 nanodots were combined with TPP in a facile route. In our design, the AgBiS2 nanodots exhibit photothermal properties and TPP can enhance the photothermal properties of the AgBiS2 nanodots to a certain extent, which make the AgBiS2-TPP nanocomposite applicable in photothermal therapy (PTT). Furthermore, the AgBiS2-TPP nanocomposite showed a remarkable computed tomography (CT) imaging performance for tumor diagnosis. The facile synthetic strategy, satisfactory anticancer effect, CT imaging and mitochondrial targeting of the AgBiS2-TPP nanocomposite demonstrate its high potential in the anticancer field.
研究领域:
肿瘤学
·
纳米医学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2020
·
IF 14.588
Benjin Chen,Chenyang Zhang,Wanni Wang,Zhaoyou Chu,Zhengbao Zha,Xiaoyan He,Wei Zhou,Tao Liu,Hua Wang,Haisheng Qian
Specific cytotoxicity for catalytic nanomedicine triggered by the tumor microenvironment (TME) has attracted increasing interest. In this work, we prepared AgBiS2 hollow nanospheres with narrow bandgaps via rapid precipitation in a weakly polar solvent, which lowered the intrinsic energy gap for the active production of highly reactive hydroxyl radicals (•OH), especially in the TME. The as-prepared AgBiS2 hollow nanospheres exhibited enhanced optical absorption and high photothermal conversion efficiency (44.2%). In addition, the hollow structured AgBiS2 nanospheres were found to have a peroxidase-mimicking feature to induce cancer cell-specific cytotoxicity while exhibiting negligible cytotoxicity toward normal cells, which might be attributed to the efficient production of highly reactive •OH originating from the overexpression H2O2 in the TME caused by surface catalysis. In particular, the cancer cell-specific cytotoxicity of the nanospheres was greatly enhanced both in vitro and in vivo upon irradiation with a near-infrared (NIR) laser (808 nm). The above-mentioned features of the hollow structured AgBiS2 will make it a promising candidate for tumor therapy.
研究领域:
纳米医学
·
癌症治疗
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）