1
|
Hou X, Liu Y, Bai S, Yu S, Huang H, Yang K, Li C, Peng Z, Zhao X, Zhou X, Xu G, Long S. Pyroelectric Photoconductive Diode for Highly Sensitive and Fast DUV Detection. Adv Mater 2024:e2314249. [PMID: 38564779 DOI: 10.1002/adma.202314249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/29/2024] [Indexed: 04/04/2024]
Abstract
Detecting high-energy photons from the deep ultraviolet (DUV) to X-rays is vital in security, medicine, industry, and science. Wide bandgap (WBG) semiconductors exhibit great potential for detecting high-energy photons. However, the implementation of highly sensitive and high-speed detectors based on WBG semiconductors has been a huge challenge due to the inevitable deep level traps and the lack of appropriate device structure engineering. Here, a sensitive and fast pyroelectric photoconductive diode (PPD), which couples the interface pyroelectric effect with the photoconductive effect based on tailored polycrystal Ga-rich GaOx (PGR-GaOx) Schottky photodiode, is first proposed. The PPD device exhibits ultrahigh detection performance for DUV and X-ray light. The responsivity for DUV light and sensitivity for X-ray are up to 104 A W-1 and 105 µC Gyair -1 cm-2, respectively. Especially, the interface pyroelectric effect induced by polar symmetry in the depletion region of the PGR-GaOx can significantly improve the response speed of the device by 105 times. Furthermore, the potential of the device is demonstrated for imaging enhancement systems with low power consumption and high sensitivity. This work fully excavates the potential of the pyroelectric effect for detectors and provides a novel design strategy to achieve sensitive and high-speed detectors.
Collapse
Affiliation(s)
- Xiaohu Hou
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Yan Liu
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Shiyu Bai
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Shunjie Yu
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Hong Huang
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Kai Yang
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Chen Li
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Zhixin Peng
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Xiaolong Zhao
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Xuanze Zhou
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Guangwei Xu
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| | - Shibing Long
- School of Microelectronics, University of Science and Technology of China, Hefei, 230026, China
| |
Collapse
|
2
|
Cheng L, Yu J, Hao T, Wang W, Wei M, Li G. Advances in Polymeric Micelles: Responsive and Targeting Approaches for Cancer Immunotherapy in the Tumor Microenvironment. Pharmaceutics 2023; 15:2622. [PMID: 38004600 PMCID: PMC10675796 DOI: 10.3390/pharmaceutics15112622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/01/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
In recent years, to treat a diverse array of cancer forms, considerable advancements have been achieved in the field of cancer immunotherapies. However, these therapies encounter multiple challenges in clinical practice, such as high immune-mediated toxicity, insufficient accumulation in cancer tissues, and undesired off-target reactions. To tackle these limitations and enhance bioavailability, polymer micelles present potential solutions by enabling precise drug delivery to the target site, thus amplifying the effectiveness of immunotherapy. This review article offers an extensive survey of recent progress in cancer immunotherapy strategies utilizing micelles. These strategies include responsive and remodeling approaches to the tumor microenvironment (TME), modulation of immunosuppressive cells within the TME, enhancement of immune checkpoint inhibitors, utilization of cancer vaccine platforms, modulation of antigen presentation, manipulation of engineered T cells, and targeting other components of the TME. Subsequently, we delve into the present state and constraints linked to the clinical utilization of polymeric micelles. Collectively, polymer micelles demonstrate excellent prospects in tumor immunotherapy by effectively addressing the challenges associated with conventional cancer immunotherapies.
Collapse
Affiliation(s)
- Lichun Cheng
- Department of Pharmacy, The Second Hospital of Dalian Medical University, Dalian 116027, China; (L.C.); (T.H.); (W.W.)
- School of Pharmacy, China Medical University, Shenyang 110122, China;
| | - Jiankun Yu
- School of Pharmacy, China Medical University, Shenyang 110122, China;
| | - Tangna Hao
- Department of Pharmacy, The Second Hospital of Dalian Medical University, Dalian 116027, China; (L.C.); (T.H.); (W.W.)
| | - Wenshuo Wang
- Department of Pharmacy, The Second Hospital of Dalian Medical University, Dalian 116027, China; (L.C.); (T.H.); (W.W.)
| | - Minjie Wei
- School of Pharmacy, China Medical University, Shenyang 110122, China;
| | - Guiru Li
- Department of Pharmacy, The Second Hospital of Dalian Medical University, Dalian 116027, China; (L.C.); (T.H.); (W.W.)
| |
Collapse
|
3
|
Wang T, Hu W, Lou Z, Xu Z, Yang X, Le T, Wang J, Lin X. Thermoelectric Properties of n-Type Bi 4O 4SeX 2 (X = Cl, Br). Materials (Basel) 2023; 16:4329. [PMID: 37374512 DOI: 10.3390/ma16124329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/17/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023]
Abstract
The multiple anion superlattice Bi4O4SeCl2 has been reported to exhibit extremely low thermal conductivity along the stacking c-axis, making it a promising material for thermoelectric applications. In this study, we investigate the thermoelectric properties of Bi4O4SeX2 (X = Cl, Br) polycrystalline ceramics with different electron concentrations by adjusting the stoichiometry. Despite optimizing the electric transport, the thermal conductivity remained ultra-low and approached the Ioffe-Regel limit at high temperatures. Notably, our findings demonstrate that non-stoichiometric tuning is a promising approach for enhancing the thermoelectric performance of Bi4O4SeX2 by refining its electric transport, resulting in a figure of merit of up to 0.16 at 770 K.
Collapse
Affiliation(s)
- Tao Wang
- Department of Physics, Fudan University, Shanghai 200433, China
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Wanghua Hu
- Department of Physics, Fudan University, Shanghai 200433, China
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
| | - Zhefeng Lou
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Zhuokai Xu
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Xiaohui Yang
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
- Department of Physics, China Jiliang University, Hangzhou 310018, China
| | - Tian Le
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Jialu Wang
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| | - Xiao Lin
- Key Laboratory for Quantum Materials of Zhejiang Province, Department of Physics, School of Science, Westlake University, Hangzhou 310030, China
- Institute of Natural Sciences, Westlake Institute for Advanced Study, Hangzhou 310024, China
| |
Collapse
|