ACS Photonics最新文献_第10页

Enhanced Optomechanical Coupling between an Optically Levitated Particle and an Ultrahigh-Q Optical Microcavity 增强光悬浮粒子与超高 Q 值光学微腔之间的光机械耦合

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-28 DOI: 10.1021/acsphotonics.4c01359

Seyed Khalil Alavi, Zijie Sheng, Haneul Lee, Hansuek Lee, Sungkun Hong

{"title":"Enhanced Optomechanical Coupling between an Optically Levitated Particle and an Ultrahigh-Q Optical Microcavity","authors":"Seyed Khalil Alavi, Zijie Sheng, Haneul Lee, Hansuek Lee, Sungkun Hong","doi":"10.1021/acsphotonics.4c01359","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01359","url":null,"abstract":"Exploring the dynamics of an optically levitated dielectric micro- and nanoparticle is an exciting new subject in quantum science. Recent years have witnessed rapid advancements in attaining quantum-limited optical detection and control of a nanoscale particle by coupling its motion to a high-finesse optical cavity in the resolved-sideband regime. In order to control the particle deeper in the quantum regime, it is necessary to significantly enhance the coupling between the particle and the cavity. Here, we present a novel platform that can allow for achieving this. Our system consists of a conventional optical tweezer and a toroidal optical microcavity with an ultrahigh quality (Q) factor. The optomechanical coupling between the particle and the cavity is established by placing the particle in the near field of the cavity. The significantly reduced mode volume allows us to achieve a 50-fold increase in the single photon optomechanical coupling compared to a conventional Fabry-Pérot cavity with macroscopic mirrors, while ultralow loss of the cavity brings the system close to the resolved-sideband regime. Our approach paves the way for enabling quantum experiments on levitated mesoscopic particles with high quantum cooperativity near the resolved-sideband regime.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"15 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519630","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

Surface Treatment Engineering Enables Highly Efficient Perovskite Light-Emitting Diodes with Significantly Enhanced Modulation Speed 表面处理工程使高效 Perovskite 发光二极管的调制速度显著提高

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c0120810.1021/acsphotonics.4c01208

Shaoqun Li, Yikai Yun, Wenjie Wei, Jianfeng Du, Sijie Jiang, Yuanyuan Tian, Hongqiang Luo, Kai Huang, Cheng Li*, Mengyu Chen* and Rong Zhang,

{"title":"Surface Treatment Engineering Enables Highly Efficient Perovskite Light-Emitting Diodes with Significantly Enhanced Modulation Speed","authors":"Shaoqun Li, Yikai Yun, Wenjie Wei, Jianfeng Du, Sijie Jiang, Yuanyuan Tian, Hongqiang Luo, Kai Huang, Cheng Li*, Mengyu Chen* and Rong Zhang, ","doi":"10.1021/acsphotonics.4c0120810.1021/acsphotonics.4c01208","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01208https://doi.org/10.1021/acsphotonics.4c01208","url":null,"abstract":"Perovskite light-emitting diodes (PeLEDs) have emerged as promising candidates for high-speed data-driven illumination sources in optical communication, but the mechanisms influencing the modulation speed of PeLEDs are rarely discussed. Although it has been reported to increase the modulation bandwidth by reducing the device area, this is often geometrically limited and reduces the luminous efficiency. Here, with the surface treatment of 3-trifluoromethyl-benzylammonium iodide (3-TFBzAI) in different solvents, we can create a passivation/insulating layer on perovskites to promote/decrease the efficiency and modulation speed of PeLEDs. Based on devices with different surface treatments, an equivalent circuit model to affect the modulation speed of a PeLED is constructed using impedance analysis. The optimal post-treatment with chlorobenzene/isopropanol (CB/IPA) mixed solvent not only facilitates the luminous efficiency through efficient recrystallization and surface passivation but also, more importantly, boosts the modulation speed through favored charge injection and reduced parasitic capacitance. In particular, this improvement is more pronounced in small-area devices; up to a 77.6% increment of 3 dB bandwidth is realized in below 0.25 mm2 near-infrared PeLEDs with the resulting average external quantum efficiency of 11.67% and a 3 dB bandwidth of 1.9 MHz when the modulation speed is not affected by the active size.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 11","pages":"4716–4724 4716–4724"},"PeriodicalIF":6.5,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671925","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

Significantly Reduced Rotation Frequency for Controlling Near-Field Heat Transfer between Rotating Objects by a Nonreciprocal Substrate 大幅降低旋转频率，用非互惠基底控制旋转物体间的近场传热

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c0137910.1021/acsphotonics.4c01379

Ziqi Yu*, Xiaopeng Li, Hyung-Suk Kwon, Taehwa Lee and Hideo Iizuka,

引用次数: 0

Multifunctional Action Site Strategy of a Buried Interface for High-Performance Perovskite Solar Cells 用于高性能过氧化物太阳能电池的埋入式界面的多功能作用点策略

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c0142610.1021/acsphotonics.4c01426

Ying Tang, Zuhong Zhang, Hairui Liu, Feng Yang, Jien Yang, Yonggang Yang, Yufang Liu* and Meng Li*,

{"title":"Multifunctional Action Site Strategy of a Buried Interface for High-Performance Perovskite Solar Cells","authors":"Ying Tang, Zuhong Zhang, Hairui Liu, Feng Yang, Jien Yang, Yonggang Yang, Yufang Liu* and Meng Li*, ","doi":"10.1021/acsphotonics.4c0142610.1021/acsphotonics.4c01426","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01426https://doi.org/10.1021/acsphotonics.4c01426","url":null,"abstract":"The buried interface is pivotal for enhancing both the efficiency and stability of p-i-n perovskite solar cells (PSCs). This is because carrier extraction and recombination processes can be significantly affected by the defects that tend to form on the bottom side. Herein, a dual-reaction site molecule homopiperazine-1,4-bis (2-ethanesulfonic acid) (HEA) is employed as an effective multifunctional passivator for a self-assembled monolayer (SAM)/perovskite interface for the inverted PSCs. The HEA molecule has two sulfonic acid groups with double action sites, which can effectively fill the ITO vacancies unanchored by SAM and simultaneously passivate the uncoordinated Pb2+ defects of perovskite to form an effective molecular bridge, achieving full coverage of the substrate and orderly crystallization of perovskites. The resultant device presented satisfactory efficiencies of 25.71% (0.0982 cm2) and 24.26% (1 cm2). Our device retained 91.8% of its initial power conversion efficiency (PCE) after 1000 h of operation under 1-sun illumination in a nitrogen atmosphere. This research offers important insights into further refinement and enhancement of buried interfaces in PSCs.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 11","pages":"4916–4922 4916–4922"},"PeriodicalIF":6.5,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671929","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

Surface Treatment Engineering Enables Highly Efficient Perovskite Light-Emitting Diodes with Significantly Enhanced Modulation Speed 表面处理工程使高效 Perovskite 发光二极管的调制速度显著提高

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c01208

Shaoqun Li, Yikai Yun, Wenjie Wei, Jianfeng Du, Sijie Jiang, Yuanyuan Tian, Hongqiang Luo, Kai Huang, Cheng Li, Mengyu Chen, Rong Zhang

{"title":"Surface Treatment Engineering Enables Highly Efficient Perovskite Light-Emitting Diodes with Significantly Enhanced Modulation Speed","authors":"Shaoqun Li, Yikai Yun, Wenjie Wei, Jianfeng Du, Sijie Jiang, Yuanyuan Tian, Hongqiang Luo, Kai Huang, Cheng Li, Mengyu Chen, Rong Zhang","doi":"10.1021/acsphotonics.4c01208","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01208","url":null,"abstract":"Perovskite light-emitting diodes (PeLEDs) have emerged as promising candidates for high-speed data-driven illumination sources in optical communication, but the mechanisms influencing the modulation speed of PeLEDs are rarely discussed. Although it has been reported to increase the modulation bandwidth by reducing the device area, this is often geometrically limited and reduces the luminous efficiency. Here, with the surface treatment of 3-trifluoromethyl-benzylammonium iodide (3-TFBzAI) in different solvents, we can create a passivation/insulating layer on perovskites to promote/decrease the efficiency and modulation speed of PeLEDs. Based on devices with different surface treatments, an equivalent circuit model to affect the modulation speed of a PeLED is constructed using impedance analysis. The optimal post-treatment with chlorobenzene/isopropanol (CB/IPA) mixed solvent not only facilitates the luminous efficiency through efficient recrystallization and surface passivation but also, more importantly, boosts the modulation speed through favored charge injection and reduced parasitic capacitance. In particular, this improvement is more pronounced in small-area devices; up to a 77.6% increment of 3 dB bandwidth is realized in below 0.25 mm2 near-infrared PeLEDs with the resulting average external quantum efficiency of 11.67% and a 3 dB bandwidth of 1.9 MHz when the modulation speed is not affected by the active size.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"29 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489887","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

In Situ Forming of a 2D Inorganic Perovskite Capping Layer by Surface Reconstruction for Efficient and Stable CsPbI2Br Perovskite Solar Cells 通过表面重构原位形成二维无机包晶封盖层，实现高效稳定的锑硼包晶太阳能电池

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c0111410.1021/acsphotonics.4c01114

Dongsheng Wang, Long Cheng, Jiarun Chang, Guiqiang Wang* and Fanning Meng,

{"title":"In Situ Forming of a 2D Inorganic Perovskite Capping Layer by Surface Reconstruction for Efficient and Stable CsPbI2Br Perovskite Solar Cells","authors":"Dongsheng Wang, Long Cheng, Jiarun Chang, Guiqiang Wang* and Fanning Meng, ","doi":"10.1021/acsphotonics.4c0111410.1021/acsphotonics.4c01114","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01114https://doi.org/10.1021/acsphotonics.4c01114","url":null,"abstract":"Although inorganic perovskite solar cells (PSCs) have made remarkable progress, ambient instability and serious nonradiative recombination loss greatly impede their further development. Herein, we develop a novel surface reconstruction process to in situ grow a 2D inorganic perovskite capping layer on a 3D CsPbI2Br perovskite surface via the dynamic methanol treatment and subsequent thermal annealing for simultaneously enhancing the stability and suppressing nonradiative recombination of inorganic CsPbI2Br PSCs. The dynamic methanol treatment removes the surface defective regions of CsPbI2Br perovskite and results in forming excessive PbI2 on the CsPbI2Br perovskite surface, and the subsequent thermal annealing triggers the surface reconstruction reaction of excessive PbI2 with CsPbI2Br that leads to in situ forming of a 2D CsPb2I4Br layer on the CsPbI2Br perovskite surface, which effectively decreases the defect density and enhances the stability of CsPbI2Br perovskite. As a result, the fabricated carbon-based CsPbI2Br PSC displays a power conversion efficiency of 14.29%. Moreover, the CsPbI2Br device with a 2D CsPb2I4Br layer displays superior stability, and the efficiency of the cell without encapsulation remains at over 90% of the original value after storing in ambient conditions for 900 h.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 11","pages":"4682–4690 4682–4690"},"PeriodicalIF":6.5,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671850","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

Multifunctional Action Site Strategy of a Buried Interface for High-Performance Perovskite Solar Cells 用于高性能过氧化物太阳能电池的埋入式界面的多功能作用点策略

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c01426

Ying Tang, Zuhong Zhang, Hairui Liu, Feng Yang, Jien Yang, Yonggang Yang, Yufang Liu, Meng Li

{"title":"Multifunctional Action Site Strategy of a Buried Interface for High-Performance Perovskite Solar Cells","authors":"Ying Tang, Zuhong Zhang, Hairui Liu, Feng Yang, Jien Yang, Yonggang Yang, Yufang Liu, Meng Li","doi":"10.1021/acsphotonics.4c01426","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01426","url":null,"abstract":"The buried interface is pivotal for enhancing both the efficiency and stability of p-i-n perovskite solar cells (PSCs). This is because carrier extraction and recombination processes can be significantly affected by the defects that tend to form on the bottom side. Herein, a dual-reaction site molecule homopiperazine-1,4-bis (2-ethanesulfonic acid) (HEA) is employed as an effective multifunctional passivator for a self-assembled monolayer (SAM)/perovskite interface for the inverted PSCs. The HEA molecule has two sulfonic acid groups with double action sites, which can effectively fill the ITO vacancies unanchored by SAM and simultaneously passivate the uncoordinated Pb2+ defects of perovskite to form an effective molecular bridge, achieving full coverage of the substrate and orderly crystallization of perovskites. The resultant device presented satisfactory efficiencies of 25.71% (0.0982 cm2) and 24.26% (1 cm2). Our device retained 91.8% of its initial power conversion efficiency (PCE) after 1000 h of operation under 1-sun illumination in a nitrogen atmosphere. This research offers important insights into further refinement and enhancement of buried interfaces in PSCs.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"125 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142489990","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

In Situ Forming of a 2D Inorganic Perovskite Capping Layer by Surface Reconstruction for Efficient and Stable CsPbI2Br Perovskite Solar Cells 通过表面重构原位形成二维无机包晶封盖层，实现高效稳定的锑硼包晶太阳能电池

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c01114

Dongsheng Wang, Long Cheng, Jiarun Chang, Guiqiang Wang, Fanning Meng

{"title":"In Situ Forming of a 2D Inorganic Perovskite Capping Layer by Surface Reconstruction for Efficient and Stable CsPbI2Br Perovskite Solar Cells","authors":"Dongsheng Wang, Long Cheng, Jiarun Chang, Guiqiang Wang, Fanning Meng","doi":"10.1021/acsphotonics.4c01114","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01114","url":null,"abstract":"Although inorganic perovskite solar cells (PSCs) have made remarkable progress, ambient instability and serious nonradiative recombination loss greatly impede their further development. Herein, we develop a novel surface reconstruction process to in situ grow a 2D inorganic perovskite capping layer on a 3D CsPbI2Br perovskite surface via the dynamic methanol treatment and subsequent thermal annealing for simultaneously enhancing the stability and suppressing nonradiative recombination of inorganic CsPbI2Br PSCs. The dynamic methanol treatment removes the surface defective regions of CsPbI2Br perovskite and results in forming excessive PbI2 on the CsPbI2Br perovskite surface, and the subsequent thermal annealing triggers the surface reconstruction reaction of excessive PbI2 with CsPbI2Br that leads to in situ forming of a 2D CsPb2I4Br layer on the CsPbI2Br perovskite surface, which effectively decreases the defect density and enhances the stability of CsPbI2Br perovskite. As a result, the fabricated carbon-based CsPbI2Br PSC displays a power conversion efficiency of 14.29%. Moreover, the CsPbI2Br device with a 2D CsPb2I4Br layer displays superior stability, and the efficiency of the cell without encapsulation remains at over 90% of the original value after storing in ambient conditions for 900 h.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"1 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142490065","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

Significantly Reduced Rotation Frequency for Controlling Near-Field Heat Transfer between Rotating Objects by a Nonreciprocal Substrate 大幅降低旋转频率，用非互惠基底控制旋转物体间的近场传热

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-25 DOI: 10.1021/acsphotonics.4c01379

Ziqi Yu, Xiaopeng Li, Hyung-Suk Kwon, Taehwa Lee, Hideo Iizuka

引用次数: 0

Accurate Modeling for Small-Signal Response Analysis in GaInN/GaN-Based Micro-Light-Emitting Devices 基于氮化镓/氮化镓的微型发光器件小信号响应分析的精确建模

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2024-10-24 DOI: 10.1021/acsphotonics.4c0145510.1021/acsphotonics.4c01455

Changeun Park, Tae Kyoung Kim, Joon Seop Kwak and Dong-Pyo Han*,

{"title":"Accurate Modeling for Small-Signal Response Analysis in GaInN/GaN-Based Micro-Light-Emitting Devices","authors":"Changeun Park, Tae Kyoung Kim, Joon Seop Kwak and Dong-Pyo Han*, ","doi":"10.1021/acsphotonics.4c0145510.1021/acsphotonics.4c01455","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01455https://doi.org/10.1021/acsphotonics.4c01455","url":null,"abstract":"This study aimed to present an accurate model for small-signal response analysis that is universally applicable to GaInN/GaN-based micro-light-emitting devices (μ-LEDs) since the small-signal response analysis could lead to incorrect results when a conventional p–n (or p–i–n) junction (or depletion) theory is applied to the μ-LED structure as it is. To this end, an analytical model and an equivalent circuit were established, in which the additional undesired impact caused by the employment of the passivation layer was taken into account. To experimentally validate established models, two types of samples, i.e., ones with and others without a passivation layer, were fabricated from a single epitaxial wafer with varying chip sizes. The experimental results of impedance depicted that a metal–insulator–semiconductor capacitance (CMIS) plays a significant role in the μ-LED structure in the aspect of small-signal response analysis, unlike that in the conventional structure. That is, the CMIS should be considered and obtained separately. A methodology to obtain the CMIS was suggested, which enables providing a reliable value of CMIS in a simple way, thereby demonstrating junction capacitance, depletion width, doping profile, and built-in potential for μ-LEDs depending on the chip size. The experimental results showed that the methodology suggested in this study is very reliable. We firmly believe that the analytical model, the equivalent circuit, and the methodology presented in this study will shed light on further improvements in GaInN/GaN-based μ-LEDs.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 11","pages":"4933–4940 4933–4940"},"PeriodicalIF":6.5,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142671958","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