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Kim MI, Lee S, Kang J, Kim J, Wu Z, Won JH, Baek S, Chung DS, Kim JY, Jung IH, Woo HY. Vertically Phase Separated Photomultiplication Organic Photodetectors with p-n Heterojunction Type Ultrafast Dynamic Characteristics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2404597. [PMID: 38975985 DOI: 10.1002/adma.202404597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/30/2024] [Indexed: 07/09/2024]
Abstract
Photomultiplication (PM)-type organic photodetectors (OPDs), which typically form a homogeneous distribution (HD) of n-type dopants in a p-type polymer host (HD PM-type OPDs), have achieved a breakthrough in device responsivity by surpassing a theoretical limit of external quantum efficiency (EQE). However, they face limitations in higher dark current and slower dynamic characteristics compared to p-n heterojunction (p-n HJ) OPDs due to inherent long lifetime of trapped electrons. To overcome this, a new PM-type OPD is developed that demonstrates ultrafast dynamic properties through a vertical phase separation (VPS) strategy between the p-type polymer and n-type acceptor, referred to as VPS PM-type OPDs. Notably, VPS PM-type OPDs show three orders of magnitude increase in -3 dB cut-off frequency (120 kHz) and over a 200-fold faster response time (rising time = 4.8 µs, falling time = 8.3 µs) compared to HD PM-type OPDs, while maintaining high EQE of 1121% and specific detectivity of 2.53 × 1013 Jones at -10 V. The VPS PM-type OPD represents a groundbreaking advancement by demonstrating the coexistence of p-n HJ and PM modes within a single photoactive layer for the first time. This innovative approach holds the potential to enhance both static and dynamic properties of OPDs.
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Affiliation(s)
- Myeong In Kim
- Department of Organic and Nano Engineering and Human-Tech Convergence Program, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Soonyong Lee
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Jinhyeon Kang
- Light/Display Convergence R&BD Division, Cheorwon Plasma Research Institute, 7194 Geumgang-ro, Seo-myeon, Cheorwon-gun, Gangwon-do, 24062, Republic of Korea
| | - Jaehyeong Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Ziang Wu
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
| | - Jong Ho Won
- Department of Energy Engineering, Dankook University, Cheonan, 31116, Republic of Korea
| | - Seyeon Baek
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Dae Sung Chung
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Jin Young Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - In Hwan Jung
- Department of Organic and Nano Engineering and Human-Tech Convergence Program, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea
| | - Han Young Woo
- Department of Chemistry, Korea University, Seoul, 02841, Republic of Korea
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2
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Hou X, Coker JF, Yan J, Shi X, Azzouzi M, Eisner FD, McGettrick JD, Tuladhar SM, Abrahams I, Frost JM, Li Z, Dennis TJS, Nelson J. Structure-Property Relationships for the Electronic Applications of Bis-Adduct Isomers of Phenyl-C 61 Butyric Acid Methyl Ester. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:425-438. [PMID: 38222935 PMCID: PMC10782444 DOI: 10.1021/acs.chemmater.3c02353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/26/2023] [Accepted: 11/27/2023] [Indexed: 01/16/2024]
Abstract
Higher adducts of a fullerene, such as the bis-adduct of PCBM (bis-PCBM), can be used to achieve shallower molecular orbital energy levels than, for example, PCBM or C60. Substituting the bis-adduct for the parent fullerene is useful to increase the open-circuit voltage of organic solar cells or achieve better energy alignment as electron transport layers in, for example, perovskite solar cells. However, bis-PCBM is usually synthesized as a mixture of structural isomers, which can lead to both energetic and morphological disorder, negatively affecting device performance. Here, we present a comprehensive study on the molecular properties of 19 pure bis-isomers of PCBM using a variety of characterization methods, including ultraviolet photoelectron spectroscopy, thermal gravimetric analysis, differential scanning calorimetry, single crystal structure, and (time-dependent) density functional theory calculation. We find that the lowest unoccupied molecular orbital of such bis-isomers can be tuned to be up to 170 meV shallower than PCBM and up to 100 meV shallower than the mixture of unseparated isomers. The isolated bis-isomers also show an electron mobility in organic field-effect transistors of up to 4.5 × 10-2 cm2/(V s), which is an order of magnitude higher than that of the mixture of bis-isomers. These properties enable the fabrication of the highest performing bis-PCBM organic solar cell to date, with the best device showing a power conversion efficiency of 7.2%. Interestingly, we find that the crystallinity of bis-isomers correlates negatively with electron mobility and organic solar cell device performance, which we relate to their molecular symmetry, with a lower symmetry leading to more amorphous bis-isomers, less energetic disorder, and higher dimensional electron transport. This work demonstrates the potential of side chain engineering for optimizing the performance of fullerene-based organic electronic devices.
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Affiliation(s)
- Xueyan Hou
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
- School
of Physical and Chemical Sciences, Queen
Mary University of London, London E1 4NS, U.K.
| | - Jack F. Coker
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
| | - Jun Yan
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
- School
of Science and Engineering, The Chinese
University of Hong Kong, Shenzhen, Guangdong Province 518172, P. R. China
| | - Xingyuan Shi
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
| | - Mohammed Azzouzi
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
| | - Flurin D. Eisner
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
| | | | | | - Isaac Abrahams
- School
of Physical and Chemical Sciences, Queen
Mary University of London, London E1 4NS, U.K.
| | - Jarvist M. Frost
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
| | - Zhe Li
- School
of Engineering and Materials Sciences, Queen
Mary University of London, London E1 4NS, U.K.
| | - T. John S. Dennis
- Department
of Chemistry, Xi’an Jiaotong-Liverpool
University, Suzhou 215123, China
| | - Jenny Nelson
- Department
of Physics, Imperial College London, London SW7 2AZ, U.K.
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3
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Gong H, Lin J, Sun H. Nanocrystal Array Engineering and Optoelectronic Applications of Organic Small-Molecule Semiconductors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2087. [PMID: 37513098 PMCID: PMC10386679 DOI: 10.3390/nano13142087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/10/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023]
Abstract
Organic small-molecule semiconductor materials have attracted extensive attention because of their excellent properties. Due to the randomness of crystal orientation and growth location, however, the preparation of continuous and highly ordered organic small-molecule semiconductor nanocrystal arrays still face more challenges. Compared to organic macromolecules, organic small molecules exhibit better crystallinity, and therefore, they exhibit better semiconductor performance. The formation of organic small-molecule crystals relies heavily on weak interactions such as hydrogen bonds, van der Waals forces, and π-π interactions, which are very sensitive to external stimuli such as mechanical forces, high temperatures, and organic solvents. Therefore, nanocrystal array engineering is more flexible than that of the inorganic materials. In addition, nanocrystal array engineering is a key step towards practical application. To resolve this problem, many conventional nanocrystal array preparation methods have been developed, such as spin coating, etc. In this review, the typical and recent progress of nanocrystal array engineering are summarized. It is the typical and recent innovations that the array of nanocrystal array engineering can be patterned on the substrate through top-down, bottom-up, self-assembly, and crystallization methods, and it can also be patterned by constructing a series of microscopic structures. Finally, various multifunctional and emerging applications based on organic small-molecule semiconductor nanocrystal arrays are introduced.
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Affiliation(s)
- Haoyu Gong
- Key Laboratory of Flexible Electronics (KLoFE), Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Jinyi Lin
- Key Laboratory of Flexible Electronics (KLoFE), Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Huibin Sun
- Key Laboratory of Flexible Electronics (KLoFE), Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
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4
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Zhao X, Liu T, Loo YL. Advancing 2D Perovskites for Efficient and Stable Solar Cells: Challenges and Opportunities. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2105849. [PMID: 34668250 DOI: 10.1002/adma.202105849] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/06/2021] [Indexed: 05/20/2023]
Abstract
Perovskite solar cells (PSCs) have rapidly emerged as one of the hottest topics in the photovoltaics community owing to their high power-conversion efficiencies (PCE), and the promise to be produced at low cost. Among various PSCs, typical 3D perovskite-based solar cells deliver high PCE but they suffer from severe instability, which restricts their practical applications. In contrast to 3D perovskites, 2D perovskites that incorporate larger, less volatile, and generally more hydrophobic organic cations exhibit much improved thermal, chemical, and environmental stability. 2D perovskites can have different roles within a solar cell, either as the primary light absorber (2D PSCs), or as a capping layer atop a 3D perovskite absorbing layer (2D/3D PSCs). Tradeoffs between PCE and stability exist in both types of PSCs-2D PSCs are more stable but exhibit lower efficiency while 2D/3D PSCs deliver exciting efficiency but show relatively poor stability. To address this PCE/stability tradeoff, the challenges both the 2D and 2D/3D PSCs face are identified and select works the community has undertaken to overcome them are highlighted in this review. It is ended with several recommendations on how to further improve PSCs so their performance and stability can be commensurate with application requirements.
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Affiliation(s)
- Xiaoming Zhao
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, 08544, USA
| | - Tianran Liu
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, 08544, USA
- Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ, 08544, USA
| | - Yueh-Lin Loo
- Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ, 08544, USA
- Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ, 08544, USA
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5
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Yang J, Zhao L, Yin Z, Wang J, Zhao Y, Chen H, Liu Y. Thiadiazoloquinoxaline-Fused Acenaphthenequinone imide: A Highly Electron-Withdrawing Acceptor for Ambipolar Semiconducting Polymers with Strong Near-Infrared Absorption. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00200] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jiayi Yang
- Department of Materials Science, Fudan University, Shanghai 200433, China
| | - Lingli Zhao
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Zhihong Yin
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Jiajia Wang
- Department of Materials Science, Fudan University, Shanghai 200433, China
| | - Yan Zhao
- Department of Materials Science, Fudan University, Shanghai 200433, China
| | - Huajie Chen
- Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Yunqi Liu
- Department of Materials Science, Fudan University, Shanghai 200433, China
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6
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Taguchi T, Chiarella F, Barra M, Chianese F, Kubozono Y, Cassinese A. Balanced Ambipolar Charge Transport in Phenacene/Perylene Heterojunction-Based Organic Field-Effect Transistors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8631-8642. [PMID: 33583173 PMCID: PMC9289882 DOI: 10.1021/acsami.0c20140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Electronic devices relying on the combination of different conjugated organic materials are considerably appealing for their potential use in many applications such as photovoltaics, light emission, and digital/analog circuitry. In this study, the electrical response of field-effect transistors achieved through the evaporation of picene and PDIF-CN2 molecules, two well-known organic semiconductors with remarkable charge transport properties, was investigated. With the main goal to get a balanced ambipolar response, various device configurations bearing double-layer, triple-layer, and codeposited active channels were analyzed. The most suitable choices for the layer deposition processes, the related characteristic parameters, and the electrode position were identified to this purpose. In this way, ambipolar organic field-effect transistors exhibiting balanced mobility values exceeding 0.1 cm2 V-1 s-1 for both electrons and holes were obtained. These experimental results highlight also how the combination between picene and PDIF-CN2 layers allows tuning the threshold voltages of the p-type response. Scanning Kelvin probe microscopy (SKPM) images acquired on picene/PDIF-CN2 heterojunctions suggest the presence of an interface dipole between the two organic layers. This feature is related to the partial accumulation of space charge at the interface being enhanced when the electrons are depleted in the underlayer.
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Affiliation(s)
- Tomoya Taguchi
- Research
Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Fabio Chiarella
- CNR-SPIN, c/o Dip. di Fisica “Ettore
Pancini”, P.le Tecchio, 80, I-80125 Napoli, Italy
- Email
| | - Mario Barra
- CNR-SPIN, c/o Dip. di Fisica “Ettore
Pancini”, P.le Tecchio, 80, I-80125 Napoli, Italy
| | - Federico Chianese
- CNR-SPIN, c/o Dip. di Fisica “Ettore
Pancini”, P.le Tecchio, 80, I-80125 Napoli, Italy
- Dip.
di Fisica “Ettore Pancini”, Università “Federico II”, P.le Tecchio, 80, I-80125 Napoli, Italy
| | - Yoshihiro Kubozono
- Research
Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
| | - Antonio Cassinese
- CNR-SPIN, c/o Dip. di Fisica “Ettore
Pancini”, P.le Tecchio, 80, I-80125 Napoli, Italy
- Dip.
di Fisica “Ettore Pancini”, Università “Federico II”, P.le Tecchio, 80, I-80125 Napoli, Italy
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7
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Shi W, Salerno F, Ward MD, Santana-Bonilla A, Wade J, Hou X, Liu T, Dennis TJS, Campbell AJ, Jelfs KE, Fuchter MJ. Fullerene Desymmetrization as a Means to Achieve Single-Enantiomer Electron Acceptors with Maximized Chiroptical Responsiveness. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004115. [PMID: 33225503 DOI: 10.1002/adma.202004115] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/17/2020] [Indexed: 06/11/2023]
Abstract
Solubilized fullerene derivatives have revolutionized the development of organic photovoltaic devices, acting as excellent electron acceptors. The addition of solubilizing addends to the fullerene cage results in a large number of isomers, which are generally employed as isomeric mixtures. Moreover, a significant number of these isomers are chiral, which further adds to the isomeric complexity. The opportunities presented by single-isomer, and particularly single-enantiomer, fullerenes in organic electronic materials and devices are poorly understood however. Here, ten pairs of enantiomers are separated from the 19 structural isomers of bis[60]phenyl-C61-butyric acid methyl ester, using them to elucidate important chiroptical relationships and demonstrating their application to a circularly polarized light (CPL)-detecting device. Larger chiroptical responses are found, occurring through the inherent chirality of the fullerene. When used in a single-enantiomer organic field-effect transistor, the potential to discriminate CPL with a fast light response time and with a very high photocurrent dissymmetry factor (gph = 1.27 ± 0.06) is demonstrated. This study thus provides key strategies to design fullerenes with large chiroptical responses for use as chiral components of organic electronic devices. It is anticipated that this data will position chiral fullerenes as an exciting material class for the growing field of chiral electronic technologies.
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Affiliation(s)
- Wenda Shi
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
| | - Francesco Salerno
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
- Center for Processable Electronics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Matthew D Ward
- Center for Processable Electronics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
- Department of Physics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Alejandro Santana-Bonilla
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
| | - Jessica Wade
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
- Center for Processable Electronics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
- Department of Physics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Xueyan Hou
- School of Physics and Astronomy and Materials Research Institute, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Tong Liu
- School of Physics and Astronomy and Materials Research Institute, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - T John S Dennis
- School of Physics and Astronomy and Materials Research Institute, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | - Alasdair J Campbell
- Center for Processable Electronics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
- Department of Physics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Kim E Jelfs
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
- Center for Processable Electronics, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK
| | - Matthew J Fuchter
- Department of Chemistry and Molecular Sciences Research Hub, Imperial College London, White City Campus, 82 Wood Lane, London, W12 0BZ, UK
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8
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Li H, Wu J, Takahashi K, Ren J, Wu R, Cai H, Wang J, Xin HL, Miao Q, Yamada H, Chen H, Li H. Organic Heterojunctions Formed by Interfacing Two Single Crystals from a Mixed Solution. J Am Chem Soc 2019; 141:10007-10015. [PMID: 31244137 DOI: 10.1021/jacs.9b03819] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Organic heterojunctions are widely used in organic electronics and they are composed of semiconductors interfaced together. Good ordering in the molecular packing inside the heterojunctions is highly desired but it is still challenging to interface organic single crystals to form single-crystalline heterojunctions. Here, we describe how organic heterojunctions are formed by interfacing two single crystals from a droplet of a mixed solution containing two semiconductors. Based on crystallization of six organic semiconductors from a droplet on a substrate, two distinct crystallization mechanisms have been recognized in the sense that crystals form at either the top interface between the air and solution or the bottom interface between the substrate and solution. The preference for one interface rather than the other depends on the semiconductor-substrate pair and, for a given semiconductor, it can be switched by changing the substrate, suggesting that the preference is associated with the semiconductor-substrate molecular interaction. Furthermore, simultaneous crystallization of two semiconductors at two different interfaces to reduce their mutual disturbance results in the formation of bilayer single crystals interfaced together for organic heterojunctions. These single-crystalline heterojunctions exhibit ambipolar charge transport in field-effect transistors, with the highest electron mobility of 1.90 cm2 V-1 s-1 and the highest hole mobility of 1.02 cm2 V-1 s-1. Hence, by elucidating the interfacial crystallization events, this work should greatly harvest the solution-grown organic single-crystalline heterojunctions.
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Affiliation(s)
- Huanbin Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China.,State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027 , China
| | - Jiake Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China.,State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027 , China
| | - Kohtaro Takahashi
- Division of Materials Science, Graduate School of Science and Technology , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan
| | - Jie Ren
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China.,State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027 , China
| | - Ruihan Wu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China.,State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027 , China
| | - Hongyi Cai
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China
| | - Jieru Wang
- State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027 , China
| | - Huolin L Xin
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton , New York 11973 , United States
| | - Qian Miao
- Department of Chemistry , The Chinese University of Hong Kong , Shatin, New Territories , Hong Kong , China
| | - Hiroko Yamada
- Division of Materials Science, Graduate School of Science and Technology , Nara Institute of Science and Technology , Ikoma , Nara 630-0192 , Japan
| | - Hongzheng Chen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China.,State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027 , China
| | - Hanying Li
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , China.,State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027 , China
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9
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Zhao X, Liu T, Shi W, Hou X, Dennis TJS. Capillary-written single-crystalline all-inorganic perovskite microribbon arrays for highly-sensitive and thermal-stable photodetectors. NANOSCALE 2019; 11:2453-2459. [PMID: 30667445 DOI: 10.1039/c8nr08890j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In recent times, as a result of its exceptional resistance to moisture and heat, cesium lead bromide (CsPbBr3) has been established as a potential high-performance perovskite material for optoelectronics, which is inclusive of photodetectors and photovoltaics. It has been demonstrated that a perovskite single crystal has major benefits over its thin-film equivalents; nevertheless, the preparation of perovskite crystal arrays for the utilisation of extensive integration is a challenging task. In this paper, we consider a simple crystallisation system, being a capillary-written system to enable the growth of single crystal microribbon arrays (MRAs) directly from a precursor solution. It is demonstrated by microstructure characterisation that CsPbBr3 MRAs are good-quality single crystals with highly-aligned crystal packing and smooth surfaces. The band-edge photoluminescence (PL) is exceptionally resilient and has a lengthy PL life of ∼62 ns. An exceptional photo-response having a particularly quick 99 μs response time and a 2496 A W-1 ultra-high responsivity is exhibited by photodetectors which are built upon these MRAs. The fact that the as-fabricated photodetectors maintain 90% of their commencing performance following 100 days of constant stress testing under ambient conditions under an illumination of 450 nm, showing exceptional operational stability, is noteworthy. A significant step towards the large-area growth of high-quality perovskite MRAs is presented by this work. This supplies favourable opportunities to build high-performance optoelectronic and nanophotonic systems.
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Affiliation(s)
- Xiaoming Zhao
- School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS, UK.
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