ACS Photonics最新文献_第5页

Polariton-Induced Transparency in Multiple Quantum Wells Probed by Time Domain Brillouin Scattering

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-09 DOI: 10.1021/acsphotonics.4c01357

Marek Karzel, Anton K. Samusev, Tetiana L. Linnik, Mario Littmann, Dirk Reuter, Manfred Bayer, Alexey V. Scherbakov, Andrey V. Akimov

{"title":"Polariton-Induced Transparency in Multiple Quantum Wells Probed by Time Domain Brillouin Scattering","authors":"Marek Karzel, Anton K. Samusev, Tetiana L. Linnik, Mario Littmann, Dirk Reuter, Manfred Bayer, Alexey V. Scherbakov, Andrey V. Akimov","doi":"10.1021/acsphotonics.4c01357","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01357","url":null,"abstract":"The interference of the incident light reflected from the surface of a medium and from a picosecond strain pulse propagating through it results in temporal oscillations of the reflected intensity. This phenomenon, called time-domain Brillouin scattering, enables us to gain information about the optical field inside the medium. The oscillation amplitude decreases with increase of the distance from the strain pulse to the surface if the incident light is strongly absorbed, while it remains constant if the medium is transparent. Here we exploit time domain Brillouin scattering to probe the optical field inside a multiple quantum well layer for light strongly coupling to excitons and forming polaritons. At low excitation density, we observe conventional Brillouin oscillations whose amplitude is small when the strain pulse is positioned far from the surface due to the strong absorption of polaritons in the vicinity of the exciton resonance. At elevated optical density, the absorption disappears, the medium becomes transparent, and the amplitude of the oscillations does not depend on the distance of the strain pulse from the surface. We explain this effect of polariton-induced transparency by the increase of the incoherent exciton density generated as result of polariton scattering. Finally, the increase of the exciton density leads to transition of the exciton gas to a collective state, resulting in collapse of the polariton state and propagation of the incident light in the medium without absorption.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"7 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142797729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polariton-Induced Transparency in Multiple Quantum Wells Probed by Time Domain Brillouin Scattering

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-09 DOI: 10.1021/acsphotonics.4c0135710.1021/acsphotonics.4c01357

Marek Karzel, Anton K. Samusev, Tetiana L. Linnik, Mario Littmann, Dirk Reuter, Manfred Bayer, Alexey V. Scherbakov* and Andrey V. Akimov*,

{"title":"Polariton-Induced Transparency in Multiple Quantum Wells Probed by Time Domain Brillouin Scattering","authors":"Marek Karzel, Anton K. Samusev, Tetiana L. Linnik, Mario Littmann, Dirk Reuter, Manfred Bayer, Alexey V. Scherbakov* and Andrey V. Akimov*, ","doi":"10.1021/acsphotonics.4c0135710.1021/acsphotonics.4c01357","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01357https://doi.org/10.1021/acsphotonics.4c01357","url":null,"abstract":"The interference of the incident light reflected from the surface of a medium and from a picosecond strain pulse propagating through it results in temporal oscillations of the reflected intensity. This phenomenon, called time-domain Brillouin scattering, enables us to gain information about the optical field inside the medium. The oscillation amplitude decreases with increase of the distance from the strain pulse to the surface if the incident light is strongly absorbed, while it remains constant if the medium is transparent. Here we exploit time domain Brillouin scattering to probe the optical field inside a multiple quantum well layer for light strongly coupling to excitons and forming polaritons. At low excitation density, we observe conventional Brillouin oscillations whose amplitude is small when the strain pulse is positioned far from the surface due to the strong absorption of polaritons in the vicinity of the exciton resonance. At elevated optical density, the absorption disappears, the medium becomes transparent, and the amplitude of the oscillations does not depend on the distance of the strain pulse from the surface. We explain this effect of polariton-induced transparency by the increase of the incoherent exciton density generated as result of polariton scattering. Finally, the increase of the exciton density leads to transition of the exciton gas to a collective state, resulting in collapse of the polariton state and propagation of the incident light in the medium without absorption.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 12","pages":"5147–5154 5147–5154"},"PeriodicalIF":6.5,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsphotonics.4c01357","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum Efficiency and Vertical Position of Quantum Emitters in hBN Determined by Purcell Effect in Hybrid Metal-Dielectric Planar Photonic Structures

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-06 DOI: 10.1021/acsphotonics.4c01416

Domitille Gérard, Aurélie Pierret, Helmi Fartas, Bruno Berini, Stéphanie Buil, Jean-Pierre Hermier, Aymeric Delteil

{"title":"Quantum Efficiency and Vertical Position of Quantum Emitters in hBN Determined by Purcell Effect in Hybrid Metal-Dielectric Planar Photonic Structures","authors":"Domitille Gérard, Aurélie Pierret, Helmi Fartas, Bruno Berini, Stéphanie Buil, Jean-Pierre Hermier, Aymeric Delteil","doi":"10.1021/acsphotonics.4c01416","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01416","url":null,"abstract":"Color centers in hexagonal boron nitride (hBN) advantageously combine excellent photophysical properties with the potential for integration in highly compact devices. Progress toward scalable integration necessitates a high quantum efficiency and an efficient photon collection. In this context, we compare the optical characteristics of individual hBN color centers generated by electron irradiation in two different electromagnetic environments. We keep track of well-identified emitters that we characterize before and after the dry transfer of exfoliated crystals. This comparison provides information about their quantum efficiency, which we find close to unity, as well as their vertical position in the crystal with nanometric precision, which we find away from the flake surfaces. Our work suggests hybrid dielectric-metal planar structures as an efficient tool for characterizing quantum emitters in addition to improving the count rate and can be generalized to other emitters in 2D materials or in planar photonic structures.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"17 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum Efficiency and Vertical Position of Quantum Emitters in hBN Determined by Purcell Effect in Hybrid Metal-Dielectric Planar Photonic Structures

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-06 DOI: 10.1021/acsphotonics.4c0141610.1021/acsphotonics.4c01416

Domitille Gérard, Aurélie Pierret, Helmi Fartas, Bruno Berini, Stéphanie Buil, Jean-Pierre Hermier and Aymeric Delteil*,

{"title":"Quantum Efficiency and Vertical Position of Quantum Emitters in hBN Determined by Purcell Effect in Hybrid Metal-Dielectric Planar Photonic Structures","authors":"Domitille Gérard, Aurélie Pierret, Helmi Fartas, Bruno Berini, Stéphanie Buil, Jean-Pierre Hermier and Aymeric Delteil*, ","doi":"10.1021/acsphotonics.4c0141610.1021/acsphotonics.4c01416","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01416https://doi.org/10.1021/acsphotonics.4c01416","url":null,"abstract":"Color centers in hexagonal boron nitride (hBN) advantageously combine excellent photophysical properties with the potential for integration in highly compact devices. Progress toward scalable integration necessitates a high quantum efficiency and an efficient photon collection. In this context, we compare the optical characteristics of individual hBN color centers generated by electron irradiation in two different electromagnetic environments. We keep track of well-identified emitters that we characterize before and after the dry transfer of exfoliated crystals. This comparison provides information about their quantum efficiency, which we find close to unity, as well as their vertical position in the crystal with nanometric precision, which we find away from the flake surfaces. Our work suggests hybrid dielectric-metal planar structures as an efficient tool for characterizing quantum emitters in addition to improving the count rate and can be generalized to other emitters in 2D materials or in planar photonic structures.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 12","pages":"5188–5194 5188–5194"},"PeriodicalIF":6.5,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gas-Developing-Guided In Situ Photolithography of MAPbBr3 Perovskite Nanocrystal Micropatterns

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-05 DOI: 10.1021/acsphotonics.4c01513

Yanru Lin, Yaxin Zhou, Yipeng Huang, Shunyou Cai, Zhixiong Cai, Feiming Li

{"title":"Gas-Developing-Guided In Situ Photolithography of MAPbBr3 Perovskite Nanocrystal Micropatterns","authors":"Yanru Lin, Yaxin Zhou, Yipeng Huang, Shunyou Cai, Zhixiong Cai, Feiming Li","doi":"10.1021/acsphotonics.4c01513","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01513","url":null,"abstract":"Photolithography plays a pivotal role in fabricating high-resolution patterns of lead halide perovskite nanocrystals (PNCs). However, the ionic nature of PNCs renders them sensitive to the complex solvents used during the etching and developing process, posing an enduring challenge in photolithography. Here, we introduce a facile and reproducible gas-developing-guided photolithography for the high-resolution micropatterning of MAPbBr3 PNCs based on the intrinsic low formation energy of PNCs. Initially, PbBr2 micropatterns are formed via UVC light-driven debromination, subsequently transforming into highly photoluminescent MAPbBr3 PNC micropatterns upon developing methylamine gas. This system achieves a remarkable resolution of up to 2 μm. Furthermore, the resulting MAPbBr3 PNC micropatterns exhibit excellent stability against light, heat, water, and organic vapors, maintaining 90% optical performance even after immersion in water for 60 days. These micropatterns have been successfully applied in anticounterfeiting with high capacity. The ability to directly pattern MAPbBr3 PNCs using a simple gas-developing process, comparable to conventional complicated solvent-based methods, offers an alternative pathway for manufacturing thin-film devices.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"25 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142777105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Achieving Low Exciton–Exciton Annihilation Rates and High Exciton Diffusion Coefficients in Monolayer WS2 on Solid-State Electrolytes

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-05 DOI: 10.1021/acsphotonics.4c01581

Xin Hu, Yang Li, Liang Zhen, Cheng-Yan Xu

{"title":"Achieving Low Exciton–Exciton Annihilation Rates and High Exciton Diffusion Coefficients in Monolayer WS2 on Solid-State Electrolytes","authors":"Xin Hu, Yang Li, Liang Zhen, Cheng-Yan Xu","doi":"10.1021/acsphotonics.4c01581","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01581","url":null,"abstract":"Transition metal dichalcogenides (TMDCs) over solid-state electrolytes, such as Li-glass and LaF3, have demonstrated enhanced electronic and optoelectronic performance. However, a thorough understanding of exciton formation, recombination, and diffusion in TMDCs with solid electrolytes is still lacking. Here, we reported that monolayer WS2 over Li-glass and LaF3 showed a disorder-dominated exciton annihilation process and demonstrated annihilation rates of 0.033 and 0.023 cm2/s, respectively. Moreover, we found high diffusion coefficients of 278 and 88.9 cm2/s for Li-glass/WS2 and LaF3/WS2, respectively, accompanied by the formation of an exciton ring in Li-glass/WS2. We explored the factors influencing the rapid propagation of excitons and the formation of exciton rings, highlighting the significant role played by the electron–hole plasma induced by the electrical double layer at the interface. These results highlighted the crucial impact of interface disorders and electric field effects on exciton behavior in TMDCs over solid electrolytes.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142777111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gas-Developing-Guided In Situ Photolithography of MAPbBr3 Perovskite Nanocrystal Micropatterns

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-05 DOI: 10.1021/acsphotonics.4c0151310.1021/acsphotonics.4c01513

Yanru Lin, Yaxin Zhou, Yipeng Huang*, Shunyou Cai, Zhixiong Cai and Feiming Li*,

{"title":"Gas-Developing-Guided In Situ Photolithography of MAPbBr3 Perovskite Nanocrystal Micropatterns","authors":"Yanru Lin, Yaxin Zhou, Yipeng Huang*, Shunyou Cai, Zhixiong Cai and Feiming Li*, ","doi":"10.1021/acsphotonics.4c0151310.1021/acsphotonics.4c01513","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01513https://doi.org/10.1021/acsphotonics.4c01513","url":null,"abstract":"Photolithography plays a pivotal role in fabricating high-resolution patterns of lead halide perovskite nanocrystals (PNCs). However, the ionic nature of PNCs renders them sensitive to the complex solvents used during the etching and developing process, posing an enduring challenge in photolithography. Here, we introduce a facile and reproducible gas-developing-guided photolithography for the high-resolution micropatterning of MAPbBr3 PNCs based on the intrinsic low formation energy of PNCs. Initially, PbBr2 micropatterns are formed via UVC light-driven debromination, subsequently transforming into highly photoluminescent MAPbBr3 PNC micropatterns upon developing methylamine gas. This system achieves a remarkable resolution of up to 2 μm. Furthermore, the resulting MAPbBr3 PNC micropatterns exhibit excellent stability against light, heat, water, and organic vapors, maintaining 90% optical performance even after immersion in water for 60 days. These micropatterns have been successfully applied in anticounterfeiting with high capacity. The ability to directly pattern MAPbBr3 PNCs using a simple gas-developing process, comparable to conventional complicated solvent-based methods, offers an alternative pathway for manufacturing thin-film devices.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 12","pages":"5281–5288 5281–5288"},"PeriodicalIF":6.5,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Achieving Low Exciton–Exciton Annihilation Rates and High Exciton Diffusion Coefficients in Monolayer WS2 on Solid-State Electrolytes

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-05 DOI: 10.1021/acsphotonics.4c0158110.1021/acsphotonics.4c01581

Xin Hu, Yang Li*, Liang Zhen and Cheng-Yan Xu*,

{"title":"Achieving Low Exciton–Exciton Annihilation Rates and High Exciton Diffusion Coefficients in Monolayer WS2 on Solid-State Electrolytes","authors":"Xin Hu, Yang Li*, Liang Zhen and Cheng-Yan Xu*, ","doi":"10.1021/acsphotonics.4c0158110.1021/acsphotonics.4c01581","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01581https://doi.org/10.1021/acsphotonics.4c01581","url":null,"abstract":"Transition metal dichalcogenides (TMDCs) over solid-state electrolytes, such as Li-glass and LaF3, have demonstrated enhanced electronic and optoelectronic performance. However, a thorough understanding of exciton formation, recombination, and diffusion in TMDCs with solid electrolytes is still lacking. Here, we reported that monolayer WS2 over Li-glass and LaF3 showed a disorder-dominated exciton annihilation process and demonstrated annihilation rates of 0.033 and 0.023 cm2/s, respectively. Moreover, we found high diffusion coefficients of 278 and 88.9 cm2/s for Li-glass/WS2 and LaF3/WS2, respectively, accompanied by the formation of an exciton ring in Li-glass/WS2. We explored the factors influencing the rapid propagation of excitons and the formation of exciton rings, highlighting the significant role played by the electron–hole plasma induced by the electrical double layer at the interface. These results highlighted the crucial impact of interface disorders and electric field effects on exciton behavior in TMDCs over solid electrolytes.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 12","pages":"5299–5305 5299–5305"},"PeriodicalIF":6.5,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intracavity Epsilon-Near-Zero Dual-Range Frequency Switch

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-05 DOI: 10.1021/acsphotonics.4c01322

Jiaye Wu, Gang Wang, Marco Clementi, Ji Zhou, Chenxingyu Huang, Xuanyi Liu, H. Y. Fu, Qian Li, Camille-Sophie Brès

{"title":"Intracavity Epsilon-Near-Zero Dual-Range Frequency Switch","authors":"Jiaye Wu, Gang Wang, Marco Clementi, Ji Zhou, Chenxingyu Huang, Xuanyi Liu, H. Y. Fu, Qian Li, Camille-Sophie Brès","doi":"10.1021/acsphotonics.4c01322","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01322","url":null,"abstract":"Epsilon-near-zero (ENZ) nanophotonic devices with zero permittivity are known to exhibit adiabatic frequency translation via temporal refraction under extracavity excitation by intense light sources, which are however hard to integrate on-chip owing to a high demand for energy density. As this class of complementary-metaloxide-semiconductor-compatible materials is progressing toward on-chip photonic integration, a more versatile solution with less intensity requirements needs to be further explored. Here, for the first time, by leveraging the abundant frequency mode resources inside a resonant cavity, we experimentally demonstrate the realization of input-dependent dual-range frequency switching via a single intracavity ENZ element. By utilizing the linear and nonlinear effects induced by ENZ, the system can perform a small 279.73 GHz as well as a 13-octave-span larger (3.63-THz) mode-locked frequency shift at 196 and 192 THz, respectively, under a pulse energy 2 orders of magnitude lower than extracavity schemes with a conversion efficiency (in %frequency shift per unit energy density per unit material thickness) also 2 orders of magnitude higher. Additionally, we report for the first time the real-time observation of the intracavity ENZ frequency switching operation, proving that the mechanism differs from pure ENZ time refraction. We further discuss that by encoding the states of two intracavity components, the optical system can program eight types of different 1- and 2-operand logic functions, including four complex noncommutative ones. This work extends the understanding of ENZ photonics beyond extracavity scenarios. The proposed solution could be extended to photonic integration with a potential for novel optical logic gates and photonic computing designs as an efficient and simplified alternative to microelectronic counterparts.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"82 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward Understanding the Current Drift Using Pulsed Voltage for a Stable Perovskite X-ray Detector

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-12-04 DOI: 10.1021/acsphotonics.4c0186010.1021/acsphotonics.4c01860

Pengxiang Wang, Hu Wang*, Jie Fu, Hao Dong, Wenqing Zhang, Zijun Gao and Yuchuan Shao*,

{"title":"Toward Understanding the Current Drift Using Pulsed Voltage for a Stable Perovskite X-ray Detector","authors":"Pengxiang Wang, Hu Wang*, Jie Fu, Hao Dong, Wenqing Zhang, Zijun Gao and Yuchuan Shao*, ","doi":"10.1021/acsphotonics.4c0186010.1021/acsphotonics.4c01860","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01860https://doi.org/10.1021/acsphotonics.4c01860","url":null,"abstract":"Metal halide perovskite single crystals (SCs) have demonstrated significant potential for X-ray detection. However, the current drift of perovskite detectors has been the primary obstacle for commercialization. Here, we investigate the current drift of perovskite devices using the pulsed voltage (PV) method and establish stable PV radiation detectors based on MAPbBr3 SC. The trend of current drift is identified to be dependent on waiting time with the negligible disturbance of carriers in PV measurements, which is influenced by the competition effect between ionic polarization and defect proliferation. Furthermore, an aluminum-bathocuproine (Al-BCP) chelating electrode is used to shorten the waiting time, which is vital for the practicability of X-ray detectors based on the PV method. The synergistic effect of the PV method and chelating interface in MAPbBr3 SC detectors exhibits double records under 100 V, including a sensitivity of 1.13 × 105 μC Gyair–1 cm–2 and a detection limit of 0.7 nGyair s–1. The photon-generated carriers under continuous illumination fill defects, resulting in an obvious photoconductive gain generation. This work enhances further understanding of current drift in perovskite devices and shows the tremendous application potential of perovskite X-ray detectors.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 12","pages":"5409–5417 5409–5417"},"PeriodicalIF":6.5,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0