1
|
Mou N, Tang B, Han B, Yu J, Zhang D, Bai Z, Zhong M, Xie B, Zhang Z, Deng S, Rogach AL, Hu J, Guan J. Large-Area Perovskite Nanocrystal Metasurfaces for Direction-Tunable Lasing. NANO LETTERS 2024; 24:12676-12683. [PMID: 39321410 DOI: 10.1021/acs.nanolett.4c03921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2024]
Abstract
Perovskite nanocrystals (PNCs) are attractive emissive materials for developing compact lasers. However, manipulation of PNC laser directionality has been difficult, which limits their usage in photonic devices that require on-demand tunability. Here we demonstrate PNC metasurface lasers with engineered emission angles. We fabricated millimeter-scale CsPbBr3 PNC metasurfaces using an all-solution-processing technique based on soft nanoimprinting lithography. By designing band-edge photonic modes at the high-symmetry X point of the reciprocal lattice, we achieved four linearly polarized lasing beams along a polar angle of ∼30° under optical pumping. The device architecture further allows tuning of the lasing emission angles to 0° and ∼50°, respectively, by adjusting the PNC thickness to shift other high-symmetry points (Γ and M) to the PNC emission wavelength range. Our laser design strategies offer prospects for applications in directional optical antennas and detectors, 3D laser projection displays, and multichannel visible light communication.
Collapse
Affiliation(s)
- Nanli Mou
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
- Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen 518055, P. R. China
| | - Bing Tang
- Department of Materials Science and Engineering and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, P. R. China
| | - Bowen Han
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
| | - Jingyue Yu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
- 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
- School of Graduate Study, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Delin Zhang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
| | - Zichun Bai
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
| | - Mou Zhong
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
| | - Biye Xie
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
| | - Zhaoyu Zhang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
| | - Shikai Deng
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
- 2020 X-Lab, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
- School of Graduate Study, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Andrey L Rogach
- Department of Materials Science and Engineering and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR 999077, P. R. China
- International Research Center, Harbin Engineering University (Qingdao Branch), Qingdao 266555, P. R. China
| | - Jingtian Hu
- Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen 518055, P. R. China
- Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Harbin Institute of Technology, Shenzhen 518055, P. R. China
| | - Jun Guan
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P. R. China
- Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology, Shenzhen 518055, P. R. China
| |
Collapse
|
2
|
Tao Y, Zhang M, Li D, Liu K, Xu J, Wei L, Zhang K, Wang Y, Dai F, Teng L, Wang L, Wu Z, Xing J. Near-unity quantum yield and long-term emission stability in halide perovskite nanocrystal glass composite. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 316:124379. [PMID: 38692106 DOI: 10.1016/j.saa.2024.124379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/23/2024] [Accepted: 04/27/2024] [Indexed: 05/03/2024]
Abstract
Metal halide perovskites are promising optoelectronic materials due to their outstanding luminescent properties. However, the instability of perovskites has long been the bottleneck to their practical applications. Here Cs4PbBr6 nanocrystals based glass composite (Cs4PbBr6 NCs@glass) are successfully prepared, which displays green emission color (520 nm), narrow bandwidth (23 nm) and a near-unity photoluminescence quantum yield (PLQY). The H2O molecules permeating in the lattice of Cs4PbBr6 were found to be a crucial role in the subband energy emission. The Cs4PbBr6 NCs@glass has excellent emission stability; maintains 93 % of initial PL intensity after ultraviolet light irradiation for over 5000 h. In addition, by adjusting the halogen content, we have achieved tunable emission color from blue (450 nm) to green (520 nm) and red (670 nm) on Cs4PbX6 NCs@glass (X = Cl, Br, I), which covers up to 127 % of the National Television Systems Board (NTSC) standard system. Our finding indicates the commercial applications of perovskite materials in lighting and display.
Collapse
Affiliation(s)
- Yafei Tao
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Mingming Zhang
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; College of Sino-German Science and Technology, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Deyu Li
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Kang Liu
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Jixiang Xu
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Lulu Wei
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Kai Zhang
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yunhu Wang
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Fangxu Dai
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China
| | - Lihua Teng
- School of Mathematics and Physics, Qingdao University of Science and Technology, Qingdao 266061, China
| | - Lei Wang
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China; Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhanchao Wu
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China.
| | - Jun Xing
- Key Laboratory of Eco-chemical Engineering, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science & Technology, Qingdao 266042, China.
| |
Collapse
|
3
|
He J, Li H, Liu C, Wang X, Zhang Q, Liu J, Wang M, Liu Y. Hot-Injection Synthesis of Cesium Lead Halide Perovskite Nanowires with Tunable Optical Properties. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2173. [PMID: 38793240 PMCID: PMC11123179 DOI: 10.3390/ma17102173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 05/26/2024]
Abstract
Metal halide perovskite semiconductors have emerged as promising materials for various optoelectronic applications due to their unique crystal structure and outstanding properties. Among different forms, perovskite nanowires (NWs) offer distinct advantages, including a high aspect ratio, superior crystallinity, excellent light absorption, and carrier transport properties, as well as unique anisotropic luminescence properties. Understanding the formation mechanism and structure-property relationship of perovskite NWs is crucial for exploring their potential in optoelectronic devices. In this study, we successfully synthesized all-inorganic halide perovskite NWs with high aspect ratios and an orthorhombic crystal phase using the hot-injection method with controlled reaction conditions and surface ligands. These NWs exhibit excellent optical and electrical properties. Moreover, precise control over the halogen composition through a simple anion exchange process enables the tuning of the bandgap, leading to fluorescence emission, covering a wide range of colors across the visible spectrum. Consequently, these perovskite NWs hold great potential for efficient energy conversion and catalytic applications in photoelectrocatalysis.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Yong Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering (ISMSE), Wuhan University of Technology (WUT), Wuhan 430070, China; (J.H.); (H.L.); (C.L.); (X.W.); (Q.Z.); (J.L.); (M.W.)
| |
Collapse
|
4
|
Zhang ZD, Yu SY, Xu H, Lu MH, Chen YF. Monolithic Strong Coupling of Topological Surface Acoustic Wave Resonators on Lithium Niobate. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312861. [PMID: 38340067 DOI: 10.1002/adma.202312861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/06/2024] [Indexed: 02/12/2024]
Abstract
Coherent phonon transfer via high-quality factor (Q) mechanical resonator strong coupling has garnered significant interest. Yet, the practical applications of these strongly coupled resonator devices are largely constrained by their vulnerability to fabrication defects. In this study, topological strong coupling of gigahertz frequency surface acoustic wave (SAW) resonators with lithium niobate is achieved. The nanoscale grooves are etched onto the lithium niobate surface to establish robust SAW topological interface states (TISs). By constructing phononic crystal (PnC) heterostructures, a strong coupling of two SAW TISs, achieving a maximum Rabi splitting of 22 MHz and frequency quality factor product fQm of ≈1.2 × 1013 Hz, is realized. This coupling can be tuned by adjusting geometric parameters and a distinct spectral anticrossing is experimentally observed. Furthermore, a dense wavelength division multiplexing device based on the coupling of multiple TISs is demonstrated. These findings open new avenues for the development of practical topological acoustic devices for on-chip sensing, filtering, phonon entanglement, and beyond.
Collapse
Affiliation(s)
- Zi-Dong Zhang
- National Laboratory of Solid State Microstructures, Department of Materials Science and Engineering, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, 210093, China
| | - Si-Yuan Yu
- National Laboratory of Solid State Microstructures, Department of Materials Science and Engineering, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, 210093, China
| | - Haitan Xu
- School of Materials Science and Intelligent Engineering, Shishan Laboratory, Nanjing University, Suzhou, Jiangsu, 215163, China
| | - Ming-Hui Lu
- National Laboratory of Solid State Microstructures, Department of Materials Science and Engineering, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, 210093, China
| | - Yan-Feng Chen
- National Laboratory of Solid State Microstructures, Department of Materials Science and Engineering, Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing, 210093, China
| |
Collapse
|
5
|
Sun K, Zhang B, Gao K, Song J, Li X, Fan K, Chen C, Chen D, Wang Z, Cao Y, Xu B, Tan D, Qiu J. Localized Temperature Engineering Enables Writing of Heterostructures in Glass for Polarized Photoluminescence of Perovskites. ACS NANO 2024; 18:6550-6557. [PMID: 38353478 DOI: 10.1021/acsnano.3c12356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Metal halide perovskite (MHP) structures that exhibit polarized photoluminescence (PL) have attracted significant interest in fabricating light field regulation elements for display, imaging, and information storage applications. We report a three-dimensional direct lithography of heterostructures for controllable polarized PL inside glass by laser-induced localized temperature engineering. The heterostructures consisted of oriented periodic structures (OPSs) and MHP nanocrystals, and the mechanism for hierarchical distribution of heterostructures was illustrated. The patterning of heterostructures for manipulable polarized PL can be used for information encryption, wave-plate, and polarized micro-LEDs.
Collapse
Affiliation(s)
- Ke Sun
- Zhejiang Lab, Hangzhou 311121, China
| | - Bo Zhang
- College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Kai Gao
- Zhejiang Lab, Hangzhou 311121, China
| | - Juan Song
- College of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xinkuo Li
- Zhejiang Lab, Hangzhou 311121, China
- School of Material Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Kailong Fan
- College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | | | - Daoyuan Chen
- College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhuo Wang
- College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yu Cao
- China International Science & Technology Cooperation Base for Laser Processing Robotics, Wenzhou University, Wenzhou 325035, China
| | - Beibei Xu
- College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Dezhi Tan
- Zhejiang Lab, Hangzhou 311121, China
- School of Material Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jianrong Qiu
- College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| |
Collapse
|
6
|
Wang L, Wu L, Pan Y. Perovskite Topological Lasers: A Brand New Combination. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 14:28. [PMID: 38202483 PMCID: PMC10781028 DOI: 10.3390/nano14010028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024]
Abstract
Nanolasers are the essential components of modern photonic chips due to their low power consumption, high energy efficiency and fast modulation. As nanotechnology has advanced, researchers have proposed a number of nanolasers operating at both wavelength and sub-wavelength scales for application as light sources in photonic chips. Despite the advances in chip technology, the quality of the optical cavity, the operating threshold and the mode of operation of the light source still limit its advanced development. Ensuring high-performance laser operation has become a challenge as device size has been significantly reduced. A potential solution to this problem is the emergence of a novel optical confinement mechanism using photonic topological insulator lasers. In addition, gain media materials with perovskite-like properties have shown great potential for lasers, a role that many other gain materials cannot fulfil. When combined with topological laser modes, perovskite materials offer new possibilities for the operation and emission mechanism of nanolasers. This study introduces the operating mechanism of topological lasers and the optical properties of perovskite materials. It then outlines the key features of their combination and discusses the principles, structures, applications and prospects of perovskite topological lasers, including the scientific hurdles they face. Finally, the future development of low-dimensional perovskite topological lasers is explored.
Collapse
Affiliation(s)
| | | | - Yong Pan
- College of Science, Xi’an University of Architecture & Technology, Xi’an 710055, China; (L.W.); (L.W.)
| |
Collapse
|
7
|
Kim I, Choi GE, Mei M, Kim MW, Kim M, Kwon YW, Jeong TI, Kim S, Hong SW, Kyhm K, Taylor RA. Gain enhancement of perovskite nanosheets by a patterned waveguide: excitation and temperature dependence of gain saturation. LIGHT, SCIENCE & APPLICATIONS 2023; 12:285. [PMID: 38001058 PMCID: PMC10673887 DOI: 10.1038/s41377-023-01313-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/20/2023] [Accepted: 10/22/2023] [Indexed: 11/26/2023]
Abstract
Optical gain enhancement of two-dimensional CsPbBr3 nanosheets was studied when the amplified spontaneous emission is guided by a patterned structure of polyurethane-acrylate. Given the uncertainties and pitfalls in retrieving a gain coefficient from the variable stripe length method, a gain contour [Formula: see text] was obtained in the plane of spectrum energy (ℏω) and stripe length (x), whereby an average gain was obtained, and gain saturation was analysed. Excitation and temperature dependence of the gain contour show that the waveguide enhances both gain and thermal stability due to the increased optical confinement and heat dissipation, and the gain origins were attributed to the two-dimensional excitons and the localized states.
Collapse
Affiliation(s)
- Inhong Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Ga Eul Choi
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Ming Mei
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Min Woo Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Minju Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Young Woo Kwon
- Department of Nano-Fusion Technology, Pusan National University, Busan, 46241, Republic of Korea
| | - Tae-In Jeong
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Seungchul Kim
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea
| | - Suck Won Hong
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea.
| | - Kwangseuk Kyhm
- Department of Opto & Cogno Mechatronics Engineering, RCDAMP, Pusan National University, Busan, 46241, Republic of Korea.
| | - Robert A Taylor
- Clarendon Laboratory, Department of Physics, University of Oxford, Oxford, OX1 3PU, UK.
| |
Collapse
|
8
|
Zhao L, Zhang D, Wang X, Li Y, Li Z, Wei H, Yao B, Ding G, Wang Z. Large-Scale Synthesis of Tunable Fluorescent Carbon Dots Powder for Light-Emitting Diodes and Fingerprint Identification. Molecules 2023; 28:5917. [PMID: 37570888 PMCID: PMC10421340 DOI: 10.3390/molecules28155917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/04/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
The emergence and fast development of carbon dots (CDs) provide an unprecedented opportunity for applications in the field of photoelectricity, but their practicability still suffers from complicated synthesis procedures and the substrate dependence of solid-state fluorescence. In this study, we design a unique microwave-assisted solid-phase synthesis route for preparing tunable fluorescent CD powders with yellow, orange, and red fluorescence (Y-CDs, O-CDs, R-CDs) by simply adjusting the mass ratio of reactants, a method which is suitable for the large-scale synthesis of CDs. The Y-/O-/R-CDs were systematically characterized using physics and spectroscopy techniques. Based on the perfect solid-state fluorescence performance of the proposed fluorescent CD powders, the Y-/O-/R-CDs were successfully applied for the construction of multi-color and white light-emitting diode devices at low cost. Furthermore, the Y-CDs displayed much higher yield and luminous efficiency than the O-CDs and R-CDs and were further used for fingerprint identification on the surfaces of glass sheets and tinfoil. In addition, the R-CD aqueous solution fluorescence is sensitive to pH, suggesting its use as a pH indicator for monitoring intracellular pH fluctuations. The proposed series of fluorescent powders composed of CDs may herald a new era in the application of optical components and criminal investigation fields.
Collapse
Affiliation(s)
- Lei Zhao
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
| | - Dong Zhang
- School of Chemical Engineering, Northwest Minzu University, Lanzhou 730030, China;
| | - Xin Wang
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (X.W.); (Z.L.); (H.W.); (B.Y.)
| | - Yang Li
- Lanzhou Hualian Xinminao Dental Clinic, Lanzhou 730000, China;
| | - Zihan Li
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (X.W.); (Z.L.); (H.W.); (B.Y.)
| | - Hua Wei
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (X.W.); (Z.L.); (H.W.); (B.Y.)
| | - Boxuan Yao
- School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (X.W.); (Z.L.); (H.W.); (B.Y.)
| | - Gongtao Ding
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
| | - Zifan Wang
- Key Laboratory of Biotechnology and Bioengineering of State Ethnic Affairs Commission, Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, China
| |
Collapse
|
9
|
Zhu X, Pan Z, Xu T, Shao X, Gao Z, Xie Q, Ying Y, Pei W, Lin H, Wang J, Tang X, Chen W, Liu Y. Capping Ligand Engineering Enables Stable CsPbBr 3 Perovskite Quantum Dots toward White-Light-Emitting Diodes. Inorg Chem 2023. [PMID: 37229601 DOI: 10.1021/acs.inorgchem.3c01092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
All-inorganic perovskite quantum dots (PeQDs) have sparked extensive research focus on white-light-emitting diodes (WLEDs), but stability and photoluminescence efficiency issues are still remain obstacles impeding their practical application. Here, we reported a facile one-step method to synthesize CsPbBr3 PeQDs at room temperature using branched didodecyldimethylammonium fluoride (DDAF) and short-chain-length octanoic acid as capping ligands. The obtained CsPbBr3 PeQDs have a near-unity photoluminescence quantum yield of 97% due to the effective passivation of DDAF. More importantly, they exhibit much improved stability against air, heat, and polar solvents, maintaining >70% of initial PL intensity. Making use of these excellent optoelectronic properties, WLEDs based on CsPbBr3 PeQDs, CsPbBr1.2I1.8 PeQDs, and blue LEDs were fabricated, which show a color gamut of 122.7% of the National Television System Committee standard, a luminous efficacy of 17.1 lm/W, with a color temperature of 5890 K, and CIE coordinates of (0.32, 0.35). These results indicate that the CsPbBr3 PeQDs have great practical potential in wide-color-gamut displays.
Collapse
Affiliation(s)
- Xiaolin Zhu
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Zhangcheng Pan
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Tianyue Xu
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Xiuwen Shao
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Zhaoju Gao
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Qingyu Xie
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Yupeng Ying
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Wei Pei
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| | - Hao Lin
- Institute of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, P. R. China
| | - Jia Wang
- Department of Physics, Umeå University, Umeå SE-90187, Sweden
| | - Xiaosheng Tang
- College of Optoelectronic Engineering, Chongqing University of Post and Telecommunications, Chongqing 400065, People's Republic of China
| | - Weiwei Chen
- College of Optoelectronic Engineering, Chongqing University of Post and Telecommunications, Chongqing 400065, People's Republic of China
| | - Yongfeng Liu
- College of Physical Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Yangzhou 225002, P. R. China
| |
Collapse
|