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Xu Z, Sun C, Min S, Ye Z, Zhao C, Li J, Liu Z, Liu Y, Li WD, Tang MC, Song Q, Fu HY, Kang F, Li J, Shen Y, Yu C, Wei G. Si/Organic Integrated Narrowband Near-Infrared Photodetector. Small 2023; 19:e2302072. [PMID: 37431202 DOI: 10.1002/smll.202302072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/26/2023] [Indexed: 07/12/2023]
Abstract
Spectrally selective narrowband photodetection is critical for near-infrared (NIR) imaging applications, such as for communicationand night-vision utilities. It is a long-standing challenge for detectors based on silicon, to achieve narrowband photodetection without integrating any optical filters. Here, this work demonstrates a NIR nanograting Si/organic (PBDBT-DTBT:BTP-4F) heterojunction photodetector (PD), which for the first time obtains the full-width-at-half-maximum (FWHM) of only 26 nm and fast response of 74 µs at 895 nm. The response peak can be successfully tailored from 895 to 977 nm. The sharp and narrow response NIR peak is inherently attributed to the coherent overlapping between the NIR transmission spectrum of organic layer and diffraction enhanced absorption peak of patterned nanograting Si substrates. The finite difference time domain (FDTD) physics calculation confirms the resonant enhancement peaks, which is well consistent with the experiment results. Meanwhile, the relative characterization indicates that the introduction of the organic film can promote carrier transfer and charge collection, facilitating efficient photocurrent generation. This new device design strategy opens up a new window in developing low-cost sensitive NIR narrowband detection.
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Affiliation(s)
- Zhuhua Xu
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, China
| | - Chuying Sun
- Department of Mechanical Engineering, University of Hong Kong, Hong Kong, 999077, China
| | - Siyi Min
- Department of Mechanical Engineering, University of Hong Kong, Hong Kong, 999077, China
| | - Zilong Ye
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, China
| | - Cong Zhao
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, China
| | - Jingzhou Li
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Zhenghao Liu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Youdi Liu
- Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA, 16802, USA
| | - Wen-Di Li
- Department of Mechanical Engineering, University of Hong Kong, Hong Kong, 999077, China
| | - Man-Chung Tang
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, China
| | - Qinghua Song
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, China
| | - H Y Fu
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
| | - Feiyu Kang
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, China
| | - Jiangyu Li
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yang Shen
- State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Cunjiang Yu
- Department of Engineering Science and Mechanics, Pennsylvania State University, University Park, PA, 16802, USA
- Department of Biomedical Engineering, Department of Materials Science and Engineering, Materials Research Institute, Pennsylvania State University, University Park, PA, 16802, USA
| | - Guodan Wei
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
- Tsinghua Shenzhen International Graduate School (SIGS), Tsinghua University, Shenzhen, 518055, China
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Wu S, Li Z, Zhang J, Wu X, Deng X, Liu Y, Zhou J, Zhi C, Yu X, Choy WCH, Zhu Z, Jen AKY. Low-Bandgap Organic Bulk-Heterojunction Enabled Efficient and Flexible Perovskite Solar Cells. Adv Mater 2021; 33:e2105539. [PMID: 34601764 DOI: 10.1002/adma.202105539] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Lead halide perovskite and organic solar cells (PSCs and OSCs) are considered as the prime candidates currently for clean energy applications due to their solution and low-temperature processibility. Nevertheless, the substantial photon loss in near-infrared (NIR) region and relatively large photovoltage deficit need to be improved to enable their uses in high-performance solar cells. To mitigate these disadvantages, low-bandgap organic bulk-heterojunction (BHJ) layer into inverted PSCs to construct facile hybrid solar cells (HSCs) is integrated. By optimizing the BHJ components, an excellent power conversion efficiency (PCE) of 23.80%, with a decent open-circuit voltage (Voc ) of 1.146 V and extended photoresponse over 950 nm for rigid HSCs is achieved. The resultant devices also exhibit superior long-term (over 1000 h) ambient- and photostability compared to those from single-component PSCs and OSCs. More importantly, a champion PCE of 21.73% and excellent mechanical durability can also be achieved in flexible HSCs, which is the highest efficiency reported for flexible solar cells to date. Taking advantage of these impressive device performances, flexible HSCs into a power source for wearable sensors to demonstrate real-time temperature monitoring are successfully integrated.
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Affiliation(s)
- Shengfan Wu
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Zhen Li
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Jie Zhang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong, 518055, P. R. China
| | - Xin Wu
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Xiang Deng
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Yiming Liu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Jingkun Zhou
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Chunyi Zhi
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Xinge Yu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Wallace C H Choy
- Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Kowloon, 999077, Hong Kong
| | - Zonglong Zhu
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
| | - Alex K-Y Jen
- Department of Chemistry, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Hong Kong Institute for Clean Energy, City University of Hong Kong, Kowloon, 999077, Hong Kong
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, 98195, USA
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Xu H, Zhu Q, Lv Y, Deng K, Deng Y, Li Q, Qi S, Chen W, Zhang H. Flexible and Highly Photosensitive Electrolyte-Gated Organic Transistors with Ionogel/Silver Nanowire Membranes. ACS Appl Mater Interfaces 2017; 9:18134-18141. [PMID: 28488860 DOI: 10.1021/acsami.7b04470] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Flexible and low-voltage photosensors with high near-infrared (NIR) sensitivity are critical for realization of interacting humans with robots and environments by thermal imaging or night vision techniques. In this work, we for the first time develop an easy and cost-effective process to fabricate flexible and ultrathin electrolyte-gated organic phototransistors (EGOPTs) with high transparent nanocomposite membranes of high-conductivity silver nanowire (AgNW) networks and large-capacitance iontronic films. A high responsivity of 1.5 × 103 A·W1-, high sensitivity of 7.5 × 105, and 3 dB bandwidth of ∼100 Hz can be achieved at very low operational voltages. Experimental studies in temporal photoresponse characteristics reveal the device has a shorter photoresponse time at lower light intensity since strong interactions between photoexcited hole carriers and anions induce extra long-lived trap states. The devices, benefiting from fast and air-stable operations, provide the possibility of the organic photosensors for constructing cost-effective and smart optoelectronic systems in the future.
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Affiliation(s)
- Haihua Xu
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - QingQing Zhu
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - Ying Lv
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - Kan Deng
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - Yinghua Deng
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - Qiaoliang Li
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - Suwen Qi
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - Wenwen Chen
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
| | - Huisheng Zhang
- Department of Biomedical and Engineering, School of Medicine, ‡Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, and §National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Shenzhen University , Shenzhen 518060, China
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Wu Z, Yao W, London AE, Azoulay JD, Ng TN. Temperature-Dependent Detectivity of Near-Infrared Organic Bulk Heterojunction Photodiodes. ACS Appl Mater Interfaces 2017; 9:1654-1660. [PMID: 27989105 DOI: 10.1021/acsami.6b12162] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bulk heterojunction photodiodes are fabricated using a new donor-acceptor polymer with a near-infrared absorption edge at 1.2 μm, achieving a detectivity up to 1012 Jones at a wavelength of 1 μm and an excellent linear dynamic range of 86 dB. The photodiode detectivity is maximized by operating at zero bias to suppress dark current, while a thin 175 nm active layer is used to facilitate charge collection without reverse bias. Analysis of the temperature dependence of the dark current and spectral response demonstrates a 2.8-fold increase in detectivity as the temperature was lowered from 44 to -12 °C, a relatively small change when compared to that of inorganic-based devices. The near-infrared photodiode shows a switching speed reaching up to 120 μs without an external bias. An application using our NIR photodiode to detect arterial pulses of a fingertip is demonstrated.
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Affiliation(s)
- Zhenghui Wu
- Department of Electrical and Computer Engineering, University of California San Diego , 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Weichuan Yao
- Department of Electrical and Computer Engineering, University of California San Diego , 9500 Gilman Drive, La Jolla, California 92093, United States
| | - Alexander E London
- School of Polymers and High Performance Materials, University of Southern Mississippi , 118 College Drive #5050, Hattiesburg, Mississippi 39406, United States
| | - Jason D Azoulay
- School of Polymers and High Performance Materials, University of Southern Mississippi , 118 College Drive #5050, Hattiesburg, Mississippi 39406, United States
| | - Tse Nga Ng
- Department of Electrical and Computer Engineering, University of California San Diego , 9500 Gilman Drive, La Jolla, California 92093, United States
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