Article
Chemistry, Physical
Xin Wang, Dezhao Zhang, Chao Gao, Feiyang Qiao, Jingjing Liang, Hong Liu, Wenzhong Shen
Summary: In this article, an electrochemical method with the assistance of NH4Pb2Br5 is proposed to fabricate CsPbBr3, achieving a high efficiency in the as-prepared solar cell. The method demonstrates good versatility and tunability, making it applicable for various perovskite materials and applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Marco van der Laan, Chris de Weerd, Lucas Poirier, Oscar van de Water, Deepika Poonia, Leyre Gomez, Sachin Kinge, Laurens D. A. Siebbeles, A. Femius Koenderink, Tom Gregorkiewicz, Peter Schall
Summary: The study provides evidence of photon recycling in CsPbBr3 nanocrystal suspensions, showing red shifts, decreased PL quantum yield, and prolonged PL decay and rise times as indicators of repeated, energy-directed radiative transfer between nanocrystals. Industrial perovskite nanocrystals applications may benefit from a better understanding of photon recycling implications.
Article
Chemistry, Multidisciplinary
Rakesh Kumar Behera, Koushik Jagadish, Sanjib Shyamal, Narayan Pradhan
Summary: Designing heterostructures of soft ionic nanocrystals with metallic or covalent nanostructures presents challenges. This study reports the formation of epitaxial heterostructures of orthorhombic CsPbBr3 and cubic Pt. The key parameters for obtaining such nanocrystal heterostructures are the appropriate facets of perovskite nanocrystals and high-temperature reaction.
Article
Chemistry, Physical
Mengling Liao, Beibei Shan, Ming Li
Summary: The study investigates the photoluminescence properties of strongly quantum-confined CsPbBr3 perovskites with different dimensionalities, showing an overall increase in PL efficiency for 0D-QDs and 1D-QWs but negligible change for 2D-QPLs, with the observation of multiple local minima. The presence of two different types of trap states - a continuum of electron trap states and discrete localized trap states - is implied through a combined analysis of excitation wavelength dependence of PL efficiency, dimensionality dependence of excitonic transition, and time-resolved PL decays. Both trap states play important roles in 0D-QDs and 1D-QWs, while discrete localized trap states dominate in 2D-QPLs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Yunpeng Wang, Fei Wang, Gangbei Zhu, Quan Quan, Zhengxun Lai, You Meng, Yi Fan, SenPo Yip, Dongxu Zhao, Johnny C. Ho
Summary: CsPb2Br5/CsPbBr3 composite systems have attracted significant attention due to their enhanced photoluminescence intensity and moisture stability. However, the luminescence mechanism of CsPb2Br5-based materials remains controversial. In this work, high-quality CsPb2Br5 crystals were prepared to investigate their luminescent mechanisms. The results indicate that the green emission comes from CsPbBr3 attached and grown on CsPb2Br5 crystals. Ultrafast transient absorption measurements further reveal the dominance of intersystem crossing in the electron transfer process due to phonon scattering-assisted hopping at interfacial states. These findings provide insights into the luminescence of CsPb2Br5 materials and pave the way for designing and enhancing the fluorescence of materials for technological applications.
Article
Chemistry, Physical
Yuetian Chen, Ning Wei, Yanfeng Miao, Haoran Chen, Meng Ren, Xiaomin Liu, Yixin Zhao
Summary: Bulk lead halide perovskite films with unique properties can be processed using low-cost methods. Solution-processed colloidal inorganic perovskite nanocrystals show potential for better stability and optoelectronic properties. In this study, CsPbBr3 nanocrystals are used to modify FAPbI(3) perovskite films, leading to improved stability and charge carrier dynamics.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Jiao Xun, Jidong Deng, Wei Shen, Ming Li, Rongxing He
Summary: The rapid synthesis of CsPbCl3?xBrx perovskite nanocrystals at room temperature provides a cost-effective and efficient method for industrial production of blue-emitting devices with precise control over photoluminescence wavelength and excellent stability and high photoluminescence quantum yields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Ruqi Chen, Zhiwei Liang, Wenjing Feng, Xubo Hu, Aize Hao
Summary: The all-inorganic CsPbBr3 perovskite thin films exhibit good optoelectronic properties with smooth surface and photoluminescence emission, and the fabricated photodetector shows fast photoresponse speed and short decay time.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Getachew Welyab, Mulualem Abebe, Dhakshnamoorthy Mani, Aparna Thankappan, Sabu Thomas, Fekadu Gochole Aga, Jung Yong Kim
Summary: This study developed a method for room temperature synthesis of ternary cesium lead bromide CsPbBr3 quantum dots, using olive oil instead of unstable oleic acid, and achieved supersaturated recrystallization. Cube-shaped nanocrystals with similar size of 40-42 nm and optical bandgap of around 2.3 eV were obtained, independent of surface ligands, while the photoluminescence lifetime and crystal packing depended on the ligand species.
Review
Materials Science, Multidisciplinary
Anirban Dutta, Mukesh Kumar Vyas, Koushik Bhowmik, Jyotiranjan Ota, Samik Kumar Hait, Kannan Chandrasekaran, Deepak Saxena, S. S. Ramakumar
Summary: Perovskite nanocrystal materials have outstanding optoelectronic properties, but suffer from phase instability and high sensitivity to external parameters. Understanding the chemistry behind their transformation is crucial for synthesis, processing, and device fabrication.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jindou Shi, Wanyin Ge, Ye Tian, Meimei Xu, Wenxing Gao, Yuanting Wu
Summary: By annealing perovskite materials in liquid, the luminescence stability can be significantly improved, offering a new approach for the commercialization of next-generation optoelectronic devices.
Review
Chemistry, Physical
Jin Ho Park, Young Seon Yoon, Jin Young Kim
Summary: All-inorganic perovskite solar cells have shown promise due to their superior stability compared to organic-inorganic perovskite solar cells. However, there are challenges in their fabrication process, such as low solubility of perovskite precursors and occurrence of secondary phases. This review focuses on CsPbBr3 perovskite solar cells and explores various processes and strategies to address these challenges. A summary of the different processes and an outlook for highly efficient all-inorganic perovskite solar cells are provided.
Article
Materials Science, Multidisciplinary
Wanyin Ge, Jindou Shi, Meimei Xu, Yuanting Wu, Hiroshi Sugimoto, Minoru Fujii
Summary: This study successfully synthesized colloidal CsPbBr3 perovskite quantum dots and investigated their downconversion and upconversion luminescence properties under UV light and IR lasers. The research demonstrated strong green emission from these quantum dots and the successful fabrication of a high-purity green LED device.
Article
Nanoscience & Nanotechnology
Ye Liu, Guoxue Yin, Wei An, Yunzhe Ke, Ruge Quhe
Summary: All-inorganic halide perovskites have excellent properties and thermal stability. This paper investigates the surface contacts of two types of CsPbBr3 perovskite to different metals and finds that Ti3C2 is a suitable material for forming ohmic contacts with the CsBr-terminated surface. The flexibility of the contacts on the PbBr2-terminated surface is also highlighted.
Article
Chemistry, Multidisciplinary
Yafeng Xu, Jialong Duan, Jian Du, Xiya Yang, Yanyan Duan, Qunwei Tang
Summary: This study successfully fabricated a flexible CsPbBr3 PSC with an efficiency of 5.71% using a heat-resistant conductive muscovite substrate, achieving high mechanical flexibility and providing a new path for increasing efficiency in the future without lowering the crystallization temperature of state-of-the-art materials.
Article
Materials Science, Ceramics
Liming Yang, Feng Ru, Jinzhuo Shi, Tao Yang, Chunyu Guo, Yafeng Chen, Enhui Wang, Zhentao Du, Kuo-Chih Chou, Xinmei Hou
Summary: In this study, a feather-like NiCoP/NF catalyst was synthesized and demonstrated efficient hydrogen production and wastewater treatment under alkaline conditions. This work provides an important solution for addressing energy shortages and wastewater pollution.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Meijing Ning, Sheng Cao, Qiuyan Li, Hang Luo, Zhentao Du, Yunjun Wang, Jialong Zhao
Summary: A strategy based on Li doping and MgO shell coating was employed to regulate the defect state of ZnO and improve the performance of InP-based QLEDs. Li doping passivated the intrinsic defect states of ZnO NPs and improved electron mobility and reduced charge transfer and current leakage at the ZnO/QD interface. MgO shell coating reduced exciton quenching and non-radiative recombination at the interface, leading to enhanced QLED performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Juan Wang, Xinxin Han, Yayun Zhou, Zixuan Wu, Dongxi Liu, Chuanyu Zeng, Sheng Cao, Bingsuo Zou
Summary: Inspired by the structural-modulated ion substitution strategy, a high-performance Cs2KIn0.8Al0.1F6:0.1Cr3+ phosphor with superior efficiency and excellent thermal stability was successfully synthesized. Compared with the initial Cs2KInF6:0.1Cr3+, the phosphor showed an improvement in internal quantum efficiency and thermal stability by 16.67% and 72.54% respectively. Furthermore, a phosphor-converted LED with superior NIR photoelectric efficiency and various applications was fabricated.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Applied
Qiancheng Meng, Sheng Cao, Juquan Guo, Qingke Wang, Ke Wang, Tao Yang, Ruosheng Zeng, Jialong Zhao, Bingsuo Zou
Summary: Dual-band electrochromic smart windows have shown great potential in smart and energy-saving buildings by independently controlling the transmittance of near-infrared and visible light. Researchers have developed a facile and effective sol-gel strategy using a foaming agent to prepare high-performance porous Ti-doped tungsten oxide film for the purpose of DESWs. The optimized film exhibits excellent dual-band electrochromic properties and has the potential to advance electrochromic technology for future energy-saving smart buildings.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Qingke Wang, Sheng Cao, Qiancheng Meng, Ke Wang, Tao Yang, Jialong Zhao, Bingsuo Zou
Summary: Dual-band electrochromic smart windows (DESWs) can control the transmittance of near-infrared (NIR) and visible (VIS) light, reducing building energy consumption. However, existing DESWs only switch between clear colorless and dark blue colors, limiting their applicability. In this study, a stable DESW based on the organic polymer polyaniline (PANI) is reported, which demonstrates efficient control of both NIR and VIS light transmittance and impressive electrochromic performance with rich color conversion, high optical modulation, high coloration efficiency, and excellent cycling stability. A prototype PANI-based DESW device is also demonstrated, allowing for multicolor electrochromism and independent control and modulation of VIS and NIR transmittance.
MATERIALS HORIZONS
(2023)
Article
Materials Science, Multidisciplinary
Qingyi Huang, Yi Liang, Sheng Cao, Zaishang Yang
Summary: Vertically aligned WO3 nano-architectures can be obtained by adjusting the composition of the precursor solution via a hydrothermal method. The nanostructured array films with thicknesses of about 600 nm exhibit remarkable enhancement of electrochromic properties in the infrared region. The improved performance is attributed to the vertically arranged structure, facilitating ion diffusion and providing a larger surface area for charge transfer reaction.
Article
Materials Science, Ceramics
Ruqin Gao, Lifang Wang, Enhui Wang, Jianling He, Jianping Huang, Xinmei Hou
Summary: Diatomite-modified wood ceramics (DMWCs) were successfully prepared as an adsorbent to remove hydroquinone from wastewater. The adsorption kinetics and thermodynamics of DMWCs on hydroquinone were comprehensively studied. The results showed that DMWCs, with a porous structure, consisting of quartz and crystalline graphite, achieved a removal rate and adsorption capacity of 76.8% and 12.31 mg/g, respectively, at a hydroquinone dosage of 200 mg and pH 7. The pseudo-second-order kinetic model provided a better fit for the adsorption process of hydroquinone, with a correlation coefficient (R2 = 0.99) higher than other models. The Freundlich equation, Redlich-Peterson equation, and Koble-Corrigan equation all fitted well with the adsorption isotherm data, with correlation coefficients (R2) higher than 0.93. The regeneration test demonstrated that DMWCs maintained an elimination rate of hydroquinone above 73% even after 11 times of reuse. This study presents DMWCs as an effective adsorbent for the removal of hydroquinone from wastewater.
CERAMICS INTERNATIONAL
(2023)
Article
Green & Sustainable Science & Technology
Shuang Liu, Tao Yang, Enhui Wang, Hailong Wang, Zhentao Du, Sheng Cao, Qiaobao Zhang, Kuo-Chih Chou, Xinmei Hou
Summary: In this study, an integrated N-doped 4H-SiC photoelectrocatalyst with a 3D nanohole structure was constructed via anodic oxidation process, and it exhibited excellent performance in the removal of heavy metal ions and organic pollutants in wastewater.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Physics, Applied
Qiuyan Li, Sheng Cao, Yuhe Bi, Peng Yu, Ke Xing, Yusheng Song, Zhentao Du, Bingsuo Zou, Jialong Zhao
Summary: This study introduces dual dipole layers to enhance the performance of blue ZnTeSe-based quantum dot light-emitting diodes (QLEDs). The dual dipole layers consisting of (2, 3, 6, 7, 10, 11 hexaazatriphenyl hexacarbonitrile) (HAT-CN) were introduced between the hole injection layer and hole transport layer. The introduction of the HAT-CN layer reduces hole injection barrier, increases hole current, and improves charge carriers' effective radiation recombination. QLEDs with the HAT-CN layer show higher external quantum efficiency and longer T-50 lifetime compared to those without the HAT-CN layer.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Ceramics
Yunsong Liu, Chunyu Guo, Yuying Gao, Enhui Wang, Enxia Xu, Tao Yang, Guangyao Chen, Xinmei Hou
Summary: The effect of Al3+ substitution on the morphology of CM2A8, as a toughening material, has been investigated using theoretical calculation and experimental methods. The first-principle calculation showed that Al3+ preferentially substitutes for Mg2+ and decreases the formation energy of CM2A8, resulting in the synthesis of pure CM2A8 phase. Moreover, the surface energy of Al3+-substituted CM2A8 is reduced, promoting the growth of platelet CM2A8. Experimental studies confirmed that Al3+ substitution can enhance the phase purity of CM2A8 and transform its morphology from equiaxed to platelet. When the substitution amount of Al3+ reaches x=0.2 (CaMg2-3xAl16+2xVxO27), platelet CM2A8 grains with a proportion of 93.4% can be obtained.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Linlin Zhou, Tao Yang, Kang Wang, Enhui Wang, Laipan Zhu, Kuo-Chih Chou, Hailong Wang, Xinmei Hou
Summary: This study focuses on improving the electrical output of piezoelectric nanogenerators (PENGs) by fabricating flexible polyvinylidene difluoride (PVDF)/6H-SiC composite films. Additionally, a hybrid nanogenerator combining both piezoelectric and triboelectric effects was also assembled. The results showed that the hybrid nanogenerator achieved output voltages nearly 4 times or 7 times higher than those of the PENG, providing a feasible approach for enhancing the electrical output of nano power sources.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Dongping Wen, Shanling Zuo, Chunfeng Huang, Zongqian Tan, Fuxi Lu, Yi Liang, Xiaoming Mo, Tao Lin, Sheng Cao, Jianrong Qiu, Jialong Zhao, Ping Chen
Summary: The modulation of the degree of excitation polarization (DOEP) of the EPUL from Er3+ doped single nanorods is systematically studied by changing the concentration of doped Er3+, Yb3+, or Mn2+. By optimizing the concentrations, the non-radiative transition and population density in excited states can be reduced, leading to enhanced DOEP. Furthermore, anti-counterfeiting based on tunable EPUL is demonstrated by assembling single nanorods into fine patterns.
ADVANCED OPTICAL MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Lin Huang, Sheng Cao, Yi Liang, Junyao Chen, Tao Yang, Jialong Zhao, Bingsuo Zou
Summary: This review summarizes the current progress in the construction, performance, and fabrication methods of multicolor electrochromic devices based on inorganic electrochromic films. The barriers and future development directions of this field are also discussed.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Biochemistry & Molecular Biology
Hao Wang, Yuxin Guo, Yugang Hu, Yanxiang Zhou, Yueying Chen, Xin Huang, Jinling Chen, Qing Deng, Sheng Cao, Bo Hu, Riyue Jiang, Juhong Pan, Tuantuan Tan, Yijia Wang, Yun Chen, Qi Dong, Pu Chen, Qing Zhou
Summary: Heart failure is a critical phase of cardiovascular disease that leads to disability and mortality. Myocardial infarction is a significant cause of heart failure, but its management remains difficult. A 3D bio-printed cardiac patch has emerged as a promising approach to replace damaged cardiomyocytes. In this study, we aimed to improve cell survival inside the bio-3D printed patch by constructing acoustically sensitive nano oxygen carriers. The results showed that the ultrasound-triggered phase transition of nanodroplets and the encapsulation of hemoglobin improved cell survival and cardiac function, making this a potential treatment for myocardial infarction.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Yapeng Zheng, Zhi Fang, Minghui Shang, Qian Sun, Xinmei Hou, Weiyou Yang
Summary: Surface passivation is an effective strategy to enhance the stability of halide perovskites. Formation and adsorption energies are commonly used to screen passivators. However, local surface structure is found to be a crucial factor for the stability of tin-based perovskites after surface passivation. The weakened Sn-I bond strength and the formation of surface iodine vacancy are responsible for the poor surface structure stability in tin-based perovskites.
MATERIALS HORIZONS
(2023)
