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Liu H, Zhou W, Chen X, Huang P, Wang X, Zhou G, Xu J. Replicating CD Nanogrooves onto PDMS to Guide Nanowire Growth for Monolithic Flexible Photodetectors with High Bending-Stable UV-vis-NIR Photoresponse. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2403870. [PMID: 38899831 DOI: 10.1002/advs.202403870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/23/2024] [Indexed: 06/21/2024]
Abstract
Guided nanowires grown on polymer surfaces facilitate their seamless integration as flexible devices without post-growth processing steps. However, this is challenging due to the inability of polymer films to provide the required lattice-matching effect. In this work, this challenge is addressed by replicating highly aligned nanogrooves from a compact disc (CD) onto a casted flexible polydimethylsiloxane (PDMS) surface. Leveraging the replicated nanogrooves, copper hexadecafluorophthalocyanine (F16CuPc) and various metal phthalocyanines are guided into large-area, self-aligned nanowires. Subsequently, by employing specifically designed shadow masks during electrode deposition, these nanowires are seamlessly integrated as either a monolithic flexible photodetector with a large sensing area or on-chip flexible photodetector arrays. The resulting flexible photodetectors exhibit millisecond and long-term stable response to UV-vis-NIR light. Notably, they demonstrate exceptional bending stability, retaining stable and sensitive photoresponse even at a curvature radius as low as 0.5 cm and after enduring 1000 bending cycles. Furthermore, the photodetector array showcases consistent sensitivity and response speed across the entire array. This work not only proves the viability of guided nanowire growth on flexible polymer surfaces by replicating CD nanogrooves but also underscores the potential for large-scale monolithic integration of guided nanowires as flexible devices.
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Affiliation(s)
- Hanyu Liu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Wei Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Xiangtao Chen
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Pingyang Huang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Xingyu Wang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Guofu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
| | - Jinyou Xu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, 510006, P. R. China
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2
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Inoue S, Higashino T, Nikaido K, Miyata R, Matsuoka S, Tanaka M, Tsuzuki S, Horiuchi S, Kondo R, Sagayama R, Kumai R, Sekine D, Koyanagi T, Matsubara M, Hasegawa T. Control of Polar/Antipolar Layered Organic Semiconductors by the Odd-Even Effect of Alkyl Chain. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308270. [PMID: 38268432 PMCID: PMC10987142 DOI: 10.1002/advs.202308270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/18/2023] [Indexed: 01/26/2024]
Abstract
Some rodlike organic molecules exhibit exceptionally high layered crystallinity when composed of a link between π-conjugated backbone (head) and alkyl chain (tail). These molecules are aligned side-by-side unidirectionally to form self-organized polar monomolecular layers, providing promising 2D materials and devices. However, their interlayer stacking arrangements have never been tunable, preventing the unidirectional arrangements of molecules in whole crystals. Here, it is demonstrated that polar/antipolar interlayer stacking can be systematically controlled by the alkyl carbon number n, when the molecules are designed to involve effectively weakened head-to-head affinity. They exhibit remarkable odd-even effect in the interlayer stacking: alternating head-to-head and tail-to-tail (antipolar) arrangement in odd-n crystals, and uniform head-to-tail (polar) arrangement in even-n crystals. The films show excellent field-effect transistor characteristics presenting unique polar/antipolar dependence and considerably improved subthreshold swing in the polar films. Additionally, the polar films present enhanced second-order nonlinear optical response along normal to the film plane. These findings are key for creating polarity-controlled optoelectronic materials and devices.
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Affiliation(s)
- Satoru Inoue
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Toshiki Higashino
- Research Institute for Advanced Electronics and Photonics (RIAEP)National Institute of Advanced Industrial Science and Technology (AIST)TsukubaIbaraki305‐8565Japan
| | - Kiyoshi Nikaido
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Ryo Miyata
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Satoshi Matsuoka
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Mutsuo Tanaka
- Department of Life & Green ChemistrySaitama Institute of TechnologyFukayaSaitama369‐0293Japan
| | - Seiji Tsuzuki
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
| | - Sachio Horiuchi
- Research Institute for Advanced Electronics and Photonics (RIAEP)National Institute of Advanced Industrial Science and Technology (AIST)TsukubaIbaraki305‐8565Japan
| | - Ryusuke Kondo
- Department of PhysicsOkayama UniversityOkayama700‐8530Japan
| | - Ryoko Sagayama
- Photon FactoryInstitute of Materials Structure ScienceHigh Energy Accelerator Research Organization (KEK)TsukubaIbaraki305‐0801Japan
| | - Reiji Kumai
- Photon FactoryInstitute of Materials Structure ScienceHigh Energy Accelerator Research Organization (KEK)TsukubaIbaraki305‐0801Japan
| | - Daiki Sekine
- Department of PhysicsTohoku UniversitySendai980‐8578Japan
| | | | - Masakazu Matsubara
- Department of PhysicsTohoku UniversitySendai980‐8578Japan
- Center for Science and Innovation in SpintronicsTohoku UniversitySendai980‐8577Japan
- PRESTOJapan Science and Technology Agency (JST)Kawaguchi332‐0012Japan
| | - Tatsuo Hasegawa
- Department of Applied PhysicsThe University of TokyoHongoBunkyo‐kuTokyo113‐8656Japan
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Lu B, Stolte M, Liu D, Zhang X, Zhao L, Tian L, Frisbie CD, Würthner F, Tao X, He T. High Sensitivity and Ultra-Broad-Range NH 3 Sensor Arrays by Precise Control of Step Defects on The Surface of Cl 2-Ndi Single Crystals. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308036. [PMID: 38308194 PMCID: PMC11005746 DOI: 10.1002/advs.202308036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/02/2024] [Indexed: 02/04/2024]
Abstract
Vapor sensors with both high sensitivity and broad detection range are technically challenging yet highly desirable for widespread chemical sensing applications in diverse environments. Generally, an increased surface-to-volume ratio can effectively enhance the sensitivity to low concentrations, but often with the trade-off of a constrained sensing range. Here, an approach is demonstrated for NH3 sensor arrays with an unprecedentedly broad sensing range by introducing controllable steps on the surface of an n-type single crystal. Step edges, serving as adsorption sites with electron-deficient properties, are well-defined, discrete, and electronically active. NH3 molecules selectively adsorb at the step edges and nearly eliminate known trap-like character, which is demonstrated by surface potential imaging. Consequently, the strategy can significantly boost the sensitivity of two-terminal NH3 resistance sensors on thin crystals with a few steps while simultaneously enhancing the tolerance on thick crystals with dense steps. Incorporation of these crystals into parallel sensor arrays results in ppb-to-% level detection range and a convenient linear relation between sheet conductance and semi-log NH3 concentration, allowing for the precise localization of vapor leakage. In general, the results suggest new opportunities for defect engineering of organic semiconductor crystal surfaces for purposeful vapor or chemical sensing.
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Affiliation(s)
- Bin Lu
- State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan250100China
| | - Matthias Stolte
- Universität WürzburgInstitut für Organische Chemie & Center for Nanosystems ChemistryAm Hubland97074WürzburgGermany
| | - Dong Liu
- State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan250100China
| | - Xiaojing Zhang
- State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan250100China
| | - Lihui Zhao
- State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan250100China
| | - Liehao Tian
- State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan250100China
| | - C. Daniel Frisbie
- Department of Chemical Engineering and Materials ScienceUniversity of MinnesotaMinneapolisMinnesota55455USA
| | - Frank Würthner
- Universität WürzburgInstitut für Organische Chemie & Center for Nanosystems ChemistryAm Hubland97074WürzburgGermany
| | - Xutang Tao
- State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan250100China
| | - Tao He
- State Key Laboratory of Crystal Materials and Institute of Crystal MaterialsShandong UniversityJinan250100China
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Fan C, Zhu M, Xu X, Wang P, Zhang Q, Dai X, Yang K, He H, Ye Z. Self-Competitive Growth of CsPbBr 3 Planar Nanowire Array. NANO LETTERS 2024; 24:3750-3758. [PMID: 38488747 DOI: 10.1021/acs.nanolett.4c00271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
Semiconductor planar nanowire arrays (PNAs) are essential for achieving large-scale device integration. Direct heteroepitaxy of PNAs on a flat substrate is constrained by the mismatch in crystalline symmetry and lattice parameters between the substrate and epitaxial nanowires. This study presents a novel approach termed "self-competitive growth" for heteroepitaxy of CsPbBr3 PNAs on mica. The key to inducing the self-competitive growth of CsPbBr3 PNAs on mica involves restricting the nucleation of CsPbBr3 nanowires in a high-adsorption region, which is accomplished by overlaying graphite sheets on the mica surface. Theoretical calculations and experimental results demonstrate that CsPbBr3 nanowires oriented perpendicular to the boundary of the high-adsorption area exhibit greater competitiveness in intercepting the growth of nanowires in the other two directions, resulting in PNAs with a consistent orientation. Moreover, these PNAs exhibit low-threshold and stable amplified spontaneous emission under one-, two-, and three-photon excitation, indicating their potential for an integrated laser array.
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Affiliation(s)
- Chao Fan
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Zhejiang Provincial Engineering Research Center of Oxide Semiconductors for Environmental and Optoelectronic Applications, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, People's Republic of China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, Shanxi 030000 People's Republic of China
| | - Meiyi Zhu
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Zhejiang Provincial Engineering Research Center of Oxide Semiconductors for Environmental and Optoelectronic Applications, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, People's Republic of China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, Shanxi 030000 People's Republic of China
| | - Xing Xu
- College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421010, People's Republic of China
| | - Peng Wang
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Zhejiang Provincial Engineering Research Center of Oxide Semiconductors for Environmental and Optoelectronic Applications, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, People's Republic of China
| | - Qinglin Zhang
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Xingliang Dai
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Zhejiang Provincial Engineering Research Center of Oxide Semiconductors for Environmental and Optoelectronic Applications, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, People's Republic of China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, Shanxi 030000 People's Republic of China
| | - Ke Yang
- Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong 999077, People's Republic of China
| | - Haiping He
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Zhejiang Provincial Engineering Research Center of Oxide Semiconductors for Environmental and Optoelectronic Applications, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, People's Republic of China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, Shanxi 030000 People's Republic of China
| | - Zhizhen Ye
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Zhejiang Provincial Engineering Research Center of Oxide Semiconductors for Environmental and Optoelectronic Applications, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, People's Republic of China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, Shanxi 030000 People's Republic of China
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Hermosilla-Palacios MA, Martinez M, Doud EA, Hertel T, Spokoyny AM, Cambré S, Wenseleers W, Kim YH, Ferguson AJ, Blackburn JL. Carrier density and delocalization signatures in doped carbon nanotubes from quantitative magnetic resonance. NANOSCALE HORIZONS 2024; 9:278-284. [PMID: 38044846 DOI: 10.1039/d3nh00480e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
High-performance semiconductor materials and devices are needed to supply the growing energy and computing demand. Organic semiconductors (OSCs) are attractive options for opto-electronic devices, due to their low cost, extensive tunability, easy fabrication, and flexibility. Semiconducting single-walled carbon nanotubes (s-SWCNTs) have been extensively studied due to their high carrier mobility, stability and opto-electronic tunability. Although molecular charge transfer doping affords widely tunable carrier density and conductivity in s-SWCNTs (and OSCs in general), a pervasive challenge for such systems is reliable measurement of charge carrier density and mobility. In this work we demonstrate a direct quantification of charge carrier density, and by extension carrier mobility, in chemically doped s-SWCNTs by a nuclear magnetic resonance approach. The experimental results are verified by a phase-space filling doping model, and we suggest this approach should be broadly applicable for OSCs. Our results show that hole mobility in doped s-SWCNT networks increases with increasing charge carrier density, a finding that is contrary to that expected for mobility limited by ionized impurity scattering. We discuss the implications of this important finding for additional tunability and applicability of s-SWCNT and OSC devices.
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Affiliation(s)
| | - Marissa Martinez
- National Renewable Energy Laboratory, Golden, Colorado 80401, USA.
| | - Evan A Doud
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
| | - Tobias Hertel
- Institute of Physical and Theoretical Chemistry, Julius-Maximilian, University Würzburg, 97074, Würzburg, Germany
| | - Alexander M Spokoyny
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
| | - Sofie Cambré
- Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Wim Wenseleers
- Department of Physics, University of Antwerp, Antwerp 2610, Belgium
| | - Yong-Hyun Kim
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
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