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Silva FS, das Neves GS, da Costa FDF, de Oliveira AM, da Costa Viana J, Brito JM, Costa Neta BM. Field evaluation of a new suction light trap for the capture of phlebotomine sand flies (Diptera: Psychodidae: Phlebotominae), vectors of leishmaniasis. Parasitol Res 2023; 123:9. [PMID: 38052759 DOI: 10.1007/s00436-023-08076-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/27/2023] [Indexed: 12/07/2023]
Abstract
Phlebotomine sand flies are crepuscular and nocturnal small dipteran insects in the family Psychodidae. Several disease agents, including Leishmania parasites, are transmitted to humans and other vertebrate hosts by the bite of an infected female sand fly. As part of leishmaniasis surveillance programs, light traps have been routinely used in sand fly collections. In this context, new trapping devices are always being required to improve vector monitoring. Here, the efficiency of a new suction light trap, named Silva suction trap or SS trap, was field evaluated in collecting sand flies. Two SS traps, one with green (520 nm, 15,000 mcd) and the other with white (wide spectrum, 18,000 mcd) LEDs, and one CDC-type trap were deployed in a rural forested environment. A total of 4686 phlebotomine sand flies were captured. The most frequent species were females of the Ps. Chagasi series (77.8%) followed by males of Ps. wellcomei (11.6%), Nyssomyia whitmani (3.3%), and Bichromomyia flaviscutellata (2.4%). The CDC-type light trap collected 101.9 ± 20.89 sand flies and 14 species, followed by the white-baited SS trap (87.78 ± 16.36, 14), and the green-baited SS trap (70.61 ± 14.75, 15), but there were no statistically significant differences among traps. A discussion on the considerable advantages of the use of SS traps over CDC traps is included. In this study, the Silva suction trap proved to be efficient and can be an alternative to CDC traps for monitoring adult phlebotomine sand fly populations.
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Affiliation(s)
- Francinaldo Soares Silva
- Laboratório de Entomologia Médica, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil.
- Programa de Pós-Graduação Em Ciências da Saúde, Universidade Federal Do Maranhão, São Luís, Maranhão, 65080-805, Brazil.
- Programa de Pós-Graduação Em Ciências Ambientais, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil.
| | - Genilson Silva das Neves
- Laboratório de Entomologia Médica, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Francisco de França da Costa
- Laboratório de Entomologia Médica, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Agnael Mendes de Oliveira
- Laboratório de Entomologia Médica, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Joany da Costa Viana
- Laboratório de Entomologia Médica, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil
- Programa de Pós-Graduação Em Ciências Ambientais, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Jefferson Mesquita Brito
- Laboratório de Entomologia Médica, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Benedita Maria Costa Neta
- Laboratório de Entomologia Médica, Centro de Ciências de Chapadinha, Universidade Federal Do Maranhão, Chapadinha, MA, 65500-000, Brazil
- Programa de Pós-Graduação Em Ciências da Saúde, Universidade Federal Do Maranhão, São Luís, Maranhão, 65080-805, Brazil
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Oteki Y, Okada Y. External-quantum-efficiency enhancement in quantum-dot solar cells with a Fabry-Perot light-trapping structure. Heliyon 2023; 9:e19312. [PMID: 37664730 PMCID: PMC10469933 DOI: 10.1016/j.heliyon.2023.e19312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/31/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023] Open
Abstract
In this work, we have experimentally investigated the impact of light trapping on the performance of InAs/GaAs quantum dot (QD) solar cells. To increase the amount of absorbed near-infrared photons, we fabricated a thin-film QD solar cell with a backside mirror where the positions of the QD layers were matched with the intensity peaks of one of the Fabry-Perot (FP) resonances in this structure to enable enhanced QD absorption near 1192 nm. We demonstrate that the external quantum efficiency at a given FP resonance wavelength of such an InAs/GaAs-based QD solar cell can be increased by an order of magnitude over solar cells without FP resonance by optimally positioning the QD layers.
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Affiliation(s)
- Yusuke Oteki
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, 4-6-1 Meguro-ku, Tokyo, 153-8904, Japan
- Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Tokyo, 182-8585, Japan
| | - Yoshitaka Okada
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, 4-6-1 Meguro-ku, Tokyo, 153-8904, Japan
- Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Tokyo, 182-8585, Japan
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Bae S, Duff M, Hong JY, Lee JK. Optical engineering of PbS colloidal quantum dot solar cells via Fabry-Perot resonance and distributed Bragg reflectors. Nano Converg 2023; 10:31. [PMID: 37402935 DOI: 10.1186/s40580-023-00379-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 03/05/2023] [Accepted: 06/07/2023] [Indexed: 07/06/2023]
Abstract
A tradeoff between light absorption and charge transport is a well-known issue in PbS colloidal quantum dot (CQD) solar cells because the carrier diffusion length in PbS CQD films is comparable to the thickness of CQD film. We reduce the tradeoff between light absorption and charge transport by combining a Fabry-Perot (FP) resonator and a distributed Bragg reflector (DBR). A FP resonance is formed between the DBR and a dielectric-metal-dielectric film as a top transparent electrode. A SiO2-TiO2 multilayer is used to form a DBR. The FP resonance enhances light absorption near the resonant wavelength of the DBR without changing the CQD film thickness. The light absorption near the FP resonance wavelength is further boosted by coupling the FP resonance with the high reflectivity of the Ag-coated DBR. When the FP resonance and DBR are combined, the power conversion efficiency (PCE) of PbS CQD solar cells increases by 54%. Moreover, the DBR assisted FP resonance enables a very thin PbS layer to absorb near infrared light four times more. The overall PCE of the thin PbS CQD solar cell increases by 24% without sacrificing the average visible transmittance (AVT). Our results show how to overcome the inherence problem of the CQD and develop a semi-transparent solar cell where the wavelength-selective absorption and the transparency for visible light are important.
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Affiliation(s)
- Sumin Bae
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Matthew Duff
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Jun Young Hong
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA, 15261, USA
| | - Jung-Kun Lee
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA, 15261, USA.
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Mohsin AS, Mondal S, Mobashera M, Malik A, Islam M, Rubaiat M. Efficiency improvement of thin film solar cell using silver pyramids array and antireflective layer. Heliyon 2023; 9:e16749. [PMID: 37303542 PMCID: PMC10250809 DOI: 10.1016/j.heliyon.2023.e16749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/13/2023] Open
Abstract
In recent years, plasmonics has been widely employed to improve light trapping in solar cells. Silver nanospheres have been used in several research works to improve the capability of solar absorption. In this paper, we use silver pyramid-shaped nanoparticles, a noble plasmonic nanoparticle, inside thin-film silicon and InP solar cells to increase light absorption compared to previously published topologies. The proposed structure consists of a TiO2 pyramid structure placed at the top of the surface working as an anti-reflective layer, silicon/indium phosphate as an absorption layer, silver pyramid-shaped nanoparticles incorporated inside the absorption layer, and an aluminum reflecting layer at the bottom. In this research, we used finite difference time domain (FDTD) simulation to model the thin-film solar cell (TFSC). Optimizing the shape and placement of the silver pyramids, we have achieved an efficiency of 17.08% and 18.58% using silicon and InP as the absorbing layers respectively, which is significantly better than previously reported studies. The open-circuit voltages are 0.58 V and 0.92 V respectively, which is the highest among other configurations. To conclude, the findings of this study laid the foundation to create an efficient thin-film solar cell utilizing the light-trapping mechanism of noble plasmonic nanoparticles.
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Kimata Y, Gotoh K, Miyamoto S, Kato S, Kurokawa Y, Usami N. Fabrication of light trapping structures specialized for near-infrared light by nanoimprinting for the application to thin crystalline silicon solar cells. Discov Nano 2023; 18:72. [PMID: 37382781 DOI: 10.1186/s11671-023-03840-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/27/2023] [Indexed: 06/30/2023]
Abstract
Vehicle-integrated photovoltaics (VIPV) are gaining attention to realize a decarbonized society in the future, and the specifications for solar cells used in VIPV are predicated on a low cost, high efficiency, and the ability to be applied to curved surfaces. One way to meet these requirements is to make the silicon substrate thinner. However, thinner substrates result in lower near-infrared light absorption and lower efficiency. To increase light absorption, light trapping structures (LTSs) can be implemented. However, conventional alkali etched pyramid textures are not specialized for near-infrared light and are insufficient to improve near-infrared light absorption. Therefore, in this study, as an alternative to alkaline etching, we employed a nanoimprinting method that can easily fabricate submicron-sized LTSs on solar cells over a large area. In addition, as a master mold fabrication method with submicron-sized patterns, silica colloidal lithography was adopted. As a result, by controlling silica coverage, diameter of silica particles (D), and etching time (tet), the density, height, and size of LTSs could be controlled. At the silica coverage of 40%, D = 800 nm, and tet = 5 min, the reduction of reflectance below 65% at 1100 nm and the theoretical short-circuit current gain of 1.55 mA/cm2 was achieved.
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Affiliation(s)
- Yuto Kimata
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
| | - Kazuhiro Gotoh
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Satoru Miyamoto
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Shinya Kato
- Department of Electrical and Mechanical Engineering, Nagoya Institute of Technology, Showa-ku, Nagoya, 466-8555, Japan
| | - Yasuyoshi Kurokawa
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Noritaka Usami
- Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
- Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan
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Mortazavifar SL, Salehi MR, Shahraki M, Abiri E. Ultra-thin broadband solar absorber based on stadium-shaped silicon nanowire arrays. Front Optoelectron 2022; 15:6. [PMID: 36637569 PMCID: PMC9756262 DOI: 10.1007/s12200-022-00010-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/24/2021] [Indexed: 06/17/2023]
Abstract
This paper investigates how the dimensions and arrangements of stadium silicon nanowires (NWs) affect their absorption properties. Compared to other NWs, the structure proposed here has a simple geometry, while its absorption rate is comparable to that of very complex structures. It is shown that changing the cross-section of NW from circular (or rectangular) to a stadium shape leads to change in the position and the number of absorption modes of the NW. In a special case, these modes result in the maximum absorption inside NWs. Another method used in this paper to attain broadband absorption is utilization of multiple NWs which have different geometries. However, the maximum enhancement is achieved using non-close packed NW. These structures can support more cavity modes, while NW scattering leads to broadening of the absorption spectra. All the structures are optimized using particle swarm optimizations. Using these optimized structures, it is viable to enhance the absorption by solar cells without introducing more absorbent materials.
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Affiliation(s)
- Seyedeh Leila Mortazavifar
- Department of Electrical and Electronics Engineering, Shiraz University of Technology, Modarres Blvd, 71557-13876, Shiraz, Iran.
| | - Mohammad Reza Salehi
- Department of Electrical and Electronics Engineering, Shiraz University of Technology, Modarres Blvd, 71557-13876, Shiraz, Iran
| | - Mojtaba Shahraki
- Faculty of Electrical and Electronics Engineering, University of Sistan and Baluchestan, Daneshgah Blvd, 98613-35856, Zahedan, Iran
| | - Ebrahim Abiri
- Department of Electrical and Electronics Engineering, Shiraz University of Technology, Modarres Blvd, 71557-13876, Shiraz, Iran
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Deng K, Chen Q, Shen Y, Li L. Improving UV stability of perovskite solar cells without sacrificing efficiency through light trapping regulated spectral modification. Sci Bull (Beijing) 2021; 66:2362-2368. [PMID: 36654122 DOI: 10.1016/j.scib.2021.06.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/21/2021] [Accepted: 06/17/2021] [Indexed: 01/20/2023]
Abstract
The stability of perovskite solar cells is an important issue to be addressed for future applications. Perovskite solar cells are vulnerable to exposure to UV light due to promoted chemical reactions. However, preventing UV light from entering solar cells lowers the power conversion efficiency by reducing the photocurrent. The challenge is to improve UV stability without sacrificing efficiency. Here, we demonstrate the reduction of UV light-related negative effects from the perspective of spectral modification. By simultaneously introducing UV-visible downshifting and light trapping, perovskite solar cells can achieve a comparable efficiency of over 21% to that of an unmodified device. The optimized device obtains increased UV stability due to UV-visible downshifting. Different from other strategies, spectral modification externally alters the composition of incident light and improves UV stability without changing the internal device architecture, which is broadly applicable to perovskite solar cells with different structures. The present work may also find applications in other types of solar cells to boost the stability of devices exposed to UV light.
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Affiliation(s)
- Kaimo Deng
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China
| | - Qinghua Chen
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China
| | - Ying Shen
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China
| | - Liang Li
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China.
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Chang CW, Wadekar PV, Huang HC, Chen QYS, Wu YR, Chen RT, Tu LW. Light Trapping Induced High Short-Circuit Current Density in III-Nitride Nanorods/Si (111) Heterojunction Solar Cells. Nanoscale Res Lett 2020; 15:167. [PMID: 32816117 PMCID: PMC7441121 DOI: 10.1186/s11671-020-03392-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
An effective-area photovoltaic efficiency of 1.27% in power conversion, excluding the grid metal contact area and under 1 sun, AM 1.5G conditions, has been obtained for the p-GaN/i-InGaN/n-GaN diode arrays epitaxially grown on (111)-Si. The short-circuit current density is 14.96 mA/cm2 and the open-circuit voltage is 0.28 V. Enhanced light trapping acquired via multiple reflections within the strain and defect free III-nitride nanorod array structures and the short-wavelength responses boosted by the wide bandgap III-nitride constituents are believed to contribute to the observed enhancements in device performance.
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Affiliation(s)
- Ching-Wen Chang
- Department of Physics and Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, Republic of China
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, 78758, USA
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan, Republic of China
| | - Paritosh V Wadekar
- Department of Physics and Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, Republic of China
| | - Hui-Chun Huang
- Department of Materials and Opto-electronic Science, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, Republic of China
| | - Quark Yung-Sung Chen
- Department of Physics and Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, Republic of China
- Department of Physics and Texas Center for Superconductivity, University of Houston, Houston, TX, 77004, USA
| | - Yuh-Renn Wu
- Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, 10617, Taiwan, Republic of China
| | - Ray T Chen
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, TX, 78758, USA
| | - Li-Wei Tu
- Department of Physics and Center of Crystal Research, National Sun Yat-Sen University, Kaohsiung, 80424, Taiwan, Republic of China.
- Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan, Republic of China.
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Li Y, Liu Z, Pan P, Liu X, Fu G, Liu Z, Luo H, Liu G. Semiconductor-nanoantenna-assisted solar absorber for ultra-broadband light trapping. Nanoscale Res Lett 2020; 15:76. [PMID: 32270307 PMCID: PMC7142205 DOI: 10.1186/s11671-020-03311-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Light trapping is an important performance of ultra-thin solar cells because it cannot only increase the optical absorption in the photoactive region but it also allows for the efficient absorption with very little materials. Semiconductor-nanoantenna has the ability to enhance light trapping and raise the transfer efficiency of solar energy. In this work, we present a solar absorber based on the gallium arsenide (GaAs) nanoantennas. Near-perfect light absorption (above 90%) is achieved in the wavelength which ranges from 468 to 2870 nm, showing an ultra-broadband and near-unity light trapping for the sun's radiation. A high short-circuit current density up to 61.947 mA/cm2 is obtained. Moreover, the solar absorber is with good structural stability and high temperature tolerance. These offer new perspectives for achieving ultra-compact efficient photovoltaic cells and thermal emitters.
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Affiliation(s)
- Yuyin Li
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China
| | - Zhengqi Liu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China.
| | - Pingping Pan
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China
| | - Xiaoshan Liu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China
| | - Guolan Fu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China
| | - Zhongmin Liu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China
| | - Haimei Luo
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China
| | - Guiqiang Liu
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, 330022, China.
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Ying A, Liu L, Xu Z, Zhang C, Chen R, You T, Ou X, Liang D, Chen W, Yin J, Li J, Kang J. Light-Trapping Engineering for the Enhancements of Broadband and Spectra-Selective Photodetection by Self-Assembled Dielectric Microcavity Arrays. Nanoscale Res Lett 2019; 14:187. [PMID: 31147847 PMCID: PMC6542964 DOI: 10.1186/s11671-019-3023-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 05/20/2019] [Indexed: 06/09/2023]
Abstract
Light manipulation has drawn great attention in photodetectors towards the specific applications with broadband or spectra-selective enhancement in photo-responsivity or conversion efficiency. In this work, a broadband light regulation was realized in photodetectors with the improved spectra-selective photo-responsivity by the optimally fabricated dielectric microcavity arrays (MCAs) on the top of devices. Both experimental and theoretical results reveal that the light absorption enhancement in the cavities is responsible for the improved sensitivity in the detectors, which originated from the light confinement of the whispering-gallery-mode (WGM) resonances and the subsequent photon coupling into active layer through the leaky modes of resonances. In addition, the absorption enhancements in specific wavelength regions were controllably accomplished by manipulating the resonance properties through varying the effective optical length of the cavities. Consequently, a responsivity enhancement up to 25% within the commonly used optical communication and sensing region (800 to 980 nm) was achieved in the MCA-decorated silicon positive-intrinsic-negative (PIN) devices compared with the control ones. This work well demonstrated that the leaky modes of WGM resonant dielectric cavity arrays can effectively improve the light trapping and thus responsivity in broadband or selective spectra for photodetection and will enable future exploration of their applications in other photoelectric conversion devices.
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Affiliation(s)
- Anni Ying
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Lian Liu
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Zhongyuan Xu
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Chunquan Zhang
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Ruihao Chen
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Tiangui You
- State Key Laboratory of Functional Material for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200000 China
| | - Xin Ou
- State Key Laboratory of Functional Material for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200000 China
| | - Dongxue Liang
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Wei Chen
- Optoelectronic Division R & D Department, Xiamen Hualian Electronic Corp., Ltd., Xiamen, 361005 Fujian China
| | - Jun Yin
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Jing Li
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
| | - Junyong Kang
- Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, 361005 Fujian China
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11
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Nematpour A, Nikoufard M. Plasmonic thin film InP/graphene-based Schottky-junction solar cell using nanorods. J Adv Res 2018; 10:15-20. [PMID: 30046472 PMCID: PMC6057233 DOI: 10.1016/j.jare.2018.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 01/04/2018] [Accepted: 01/24/2018] [Indexed: 12/02/2022] Open
Abstract
Herein, the design and simulation of graphene/InP thin film solar cells with a novel periodic array of nanorods and plasmonic back-reflectors of the nano-semi sphere was proposed. In this structure, a single-layer of the graphene sheet was placed on the vertical nanorods of InP to form a Schottky junction. The electromagnetic field was determined using solving three-dimensional Maxwell's equations discretized by the finite difference method (FDM). The enhancement of light trapping in the absorbing layer was illustrated, thereby increasing the short circuit current to a maximum value of 31.57 mA/cm2 with nanorods having a radius of 400 nm, height of 1250 nm, and nano-semi sphere radius of 50 nm, under a solar irradiation of AM1.5G. The maximum ultimate efficiency was determined to be 45.8% for an angle of incidence of 60°. This structure has shown a very good light trapping ability when graphene and ITO layers were used at the top and as a back-reflector in the proposed photonic crystal structure of the InP nanorods. Thence, this structure improves the short-circuit current density and the ultimate efficiency of 12% and 2.7%, respectively, in comparison with the InP-nanowire solar cells.
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Affiliation(s)
- Abedin Nematpour
- Department of Nanoelectronics, Nanoscience and nanotechnology Research Center, University of Kashan, Kashan, Iran
| | - Mahmoud Nikoufard
- Department of Electronics, Faculty of Electrical and Computer Engineering, University of Kashan, Kashan 87317-51167, Iran
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Costa-Neta BM, Lima-Neto AR, da Silva AA, Brito JM, Aguiar JVC, Ponte IS, Silva FS. Centers for Disease Control-type light traps equipped with high-intensity light-emitting diodes as light sources for monitoring Anopheles mosquitoes. Acta Trop 2018; 183:61-63. [PMID: 29649426 DOI: 10.1016/j.actatropica.2018.04.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/03/2018] [Accepted: 04/08/2018] [Indexed: 11/16/2022]
Abstract
In this study the phototactic response of anopheline mosquitoes to different luminous intensity light-emitting diodes (LEDs) was investigated. Centers for Disease Control-type light traps were changed by replacement of the incandescent lamps by 5 mm round type green (520 nm) and blue (470 nm) LEDs of different luminous intensities: green-LED traps with luminous intensities of 10,000, 15,000 and 20,000 millicandela (mcd) and the blue-LED traps with luminous intensities of 4000, 12,000 and 15,000 mcd. Our data showed that increasing luminous intensity has an effect on the attraction of anopheline mosquitoes to light traps, highlighting the importance of taking LEDs and light sources of high luminous intensity into account when using light-trap collections in monitoring populations of Anopheles species.
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Affiliation(s)
- Benedita Maria Costa-Neta
- Laboratory of Medical Entomology, Center for Agrarian and Environmental Sciences, Federal University of Maranhão, Chapadinha, MA, 65500-000, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, CEP: 65080-805, São Luis, Maranhão, Brazil
| | - Abdias Ribeiro Lima-Neto
- Laboratory of Medical Entomology, Center for Agrarian and Environmental Sciences, Federal University of Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Apoliana Araújo da Silva
- Laboratory of Medical Entomology, Center for Agrarian and Environmental Sciences, Federal University of Maranhão, Chapadinha, MA, 65500-000, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, CEP: 65080-805, São Luis, Maranhão, Brazil
| | - Jefferson Mesquita Brito
- Laboratory of Medical Entomology, Center for Agrarian and Environmental Sciences, Federal University of Maranhão, Chapadinha, MA, 65500-000, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, CEP: 65080-805, São Luis, Maranhão, Brazil
| | - João Vitor Castro Aguiar
- Laboratory of Medical Entomology, Center for Agrarian and Environmental Sciences, Federal University of Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Islana Silva Ponte
- Laboratory of Medical Entomology, Center for Agrarian and Environmental Sciences, Federal University of Maranhão, Chapadinha, MA, 65500-000, Brazil
| | - Francinaldo Soares Silva
- Laboratory of Medical Entomology, Center for Agrarian and Environmental Sciences, Federal University of Maranhão, Chapadinha, MA, 65500-000, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal do Maranhão, CEP: 65080-805, São Luis, Maranhão, Brazil.
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Zhou S, Yang Z, Gao P, Li X, Yang X, Wang D, He J, Ying Z, Ye J. Wafer-Scale Integration of Inverted Nanopyramid Arrays for Advanced Light Trapping in Crystalline Silicon Thin Film Solar Cells. Nanoscale Res Lett 2016; 11:194. [PMID: 27071681 PMCID: PMC4829563 DOI: 10.1186/s11671-016-1397-6] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 04/04/2016] [Indexed: 06/05/2023]
Abstract
Crystalline silicon thin film (c-Si TF) solar cells with an active layer thickness of a few micrometers may provide a viable pathway for further sustainable development of photovoltaic technology, because of its potentials in cost reduction and high efficiency. However, the performance of such cells is largely constrained by the deteriorated light absorption of the ultrathin photoactive material. Here, we report an efficient light-trapping strategy in c-Si TFs (~20 μm in thickness) that utilizes two-dimensional (2D) arrays of inverted nanopyramid (INP) as surface texturing. Three types of INP arrays with typical periodicities of 300, 670, and 1400 nm, either on front, rear, or both surfaces of the c-Si TFs, are fabricated by scalable colloidal lithography and anisotropic wet etch technique. With the extra aid of antireflection coating, the sufficient optical absorption of 20-μm-thick c-Si with a double-sided 1400-nm INP arrays yields a photocurrent density of 39.86 mA/cm(2), which is about 76 % higher than the flat counterpart (22.63 mA/cm(2)) and is only 3 % lower than the value of Lambertian limit (41.10 mA/cm(2)). The novel surface texturing scheme with 2D INP arrays has the advantages of excellent antireflection and light-trapping capabilities, an inherent low parasitic surface area, a negligible surface damage, and a good compatibility for subsequent process steps, making it a good alternative for high-performance c-Si TF solar cells.
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Affiliation(s)
- Suqiong Zhou
- Key Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai, 200072, China
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, People's Republic of China
| | - Zhenhai Yang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215006, China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou, 215006, China
| | - Pingqi Gao
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, People's Republic of China.
| | - Xiaofeng Li
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215006, China.
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou, 215006, China.
| | - Xi Yang
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, People's Republic of China
| | - Dan Wang
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, People's Republic of China
| | - Jian He
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, People's Republic of China
| | - Zhiqin Ying
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, People's Republic of China
| | - Jichun Ye
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, People's Republic of China.
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Khan F, Baek SH, Kaur J, Fareed I, Mobin A, Kim JH. Paraboloid Structured Silicon Surface for Enhanced Light Absorption: Experimental and Simulative Investigations. Nanoscale Res Lett 2015; 10:376. [PMID: 26415541 PMCID: PMC4586186 DOI: 10.1186/s11671-015-1087-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/20/2015] [Indexed: 06/05/2023]
Abstract
In this paper, we present an optical model that simulates the light trapping and scattering effects of a paraboloid texture surface first time. This model was experimentally verified by measuring the reflectance values of the periodically textured silicon (Si) surface with the shape of a paraboloid under different conditions. A paraboloid texture surface was obtained by electrochemical etching Si in the solution of hydrofluoric acid, dimethylsulfoxide (DMSO), and deionized (DI) water. The paraboloid texture surface has the advantage of giving a lower reflectance value than the hemispherical, random pyramidal, and regular pyramidal texture surfaces. In the case of parabola, the light can be concentrated in the direction of the Si surface compared to the hemispherical, random pyramidal, and regular pyramidal textured surfaces. Furthermore, in a paraboloid textured surface, there can be a maximum value of 4 or even more by anisotropic etching duration compared to the hemispherical or pyramidal textured surfaces which have a maximum h/D (depth and diameter of the texture) value of 0.5. The reflectance values were found to be strongly dependent on the h/D ratio of the texture surface. The measured reflectance values were well matched with the simulated ones. The minimum reflectance value of ~4 % was obtained at a wavelength of 600 nm for an h/D ratio of 3.75. The simulation results showed that the reflectance value for the h/D ratio can be reduced to ~0.5 % by reducing the separations among the textures. This periodic paraboloidal structure can be applied to the surface texturing technique by substituting with a conventional pyramid textured surface or moth-eye antireflection coating.
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Affiliation(s)
- Firoz Khan
- Division of Nano and Energy Convergence Research, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 50-1 Sang-Ri, Hyeonpung-Myeon, Dalseong-gun, Daegu, 711-873, Republic of Korea
| | - Seong-Ho Baek
- Division of Nano and Energy Convergence Research, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 50-1 Sang-Ri, Hyeonpung-Myeon, Dalseong-gun, Daegu, 711-873, Republic of Korea
| | - Jasmeet Kaur
- Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110 012, India
| | - Imran Fareed
- Department of Computer Science, Jamia Millia Islamia, New Delhi, 110 025, India
| | - Abdul Mobin
- Physics of Energy Harvesting Division, CSIR-National Physical Laboratory, Dr. K.S. Krishnan Marg, New Delhi, 110 012, India
| | - Jae Hyun Kim
- Division of Nano and Energy Convergence Research, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 50-1 Sang-Ri, Hyeonpung-Myeon, Dalseong-gun, Daegu, 711-873, Republic of Korea.
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15
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Zhang A, Guo Z, Tao Y, Wang W, Mao X, Fan G, Zhou K, Qu S. Advanced light-trapping effect of thin-film solar cell with dual photonic crystals. Nanoscale Res Lett 2015; 10:214. [PMID: 26034413 PMCID: PMC4444651 DOI: 10.1186/s11671-015-0912-5] [Citation(s) in RCA: 3] [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] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 04/25/2015] [Indexed: 06/04/2023]
Abstract
A thin-film solar cell with dual photonic crystals has been proposed, which shows an advanced light-trapping effect and superior performance in ultimate conversion efficiency (UCE). The shapes of nanocones have been optimized and discussed in detail by self-definition. The optimized shape of nanocone arrays (NCs) is a parabolic shape with a nearly linearly graded refractive index (GRI) profile from the air to Si, and the corresponding UCE is 30.3% for the NCs with a period of 300 nm and a thickness of only 2 μm. The top NCs and bottom NCs of the thin film have been simulated respectively to investigate their optimized shapes, and their separate contributions to the light harvest have also been discussed fully. The height of the top NCs and bottom NCs will also influence the performances of the thin-film solar cell greatly, and the result indicates that the unconformal NCs have better light-trapping ability with an optimal UCE of 32.3% than the conformal NCs with an optimal UCE of 30.3%.
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Affiliation(s)
- Anjun Zhang
- />School of Computer and Information, Hefei University of Technology, 193# Tunxi Road, Hefei, 230009 Anhui Province China
| | - Zhongyi Guo
- />School of Computer and Information, Hefei University of Technology, 193# Tunxi Road, Hefei, 230009 Anhui Province China
- />Department of Optoelectronics Science, Harbin Institute of Technology, Weihai Campus, 2# Wenhua West Road, Weihai, 264209 Shandong Province China
| | - Yifei Tao
- />School of Computer and Information, Hefei University of Technology, 193# Tunxi Road, Hefei, 230009 Anhui Province China
| | - Wei Wang
- />Department of Optoelectronics Science, Harbin Institute of Technology, Weihai Campus, 2# Wenhua West Road, Weihai, 264209 Shandong Province China
- />Department of Physics, Harbin Institute of Technology, 91# West Dazhi Street, Harbin, 150001 Heilongjiang Province China
| | - Xiaoqin Mao
- />Department of Optoelectronics Science, Harbin Institute of Technology, Weihai Campus, 2# Wenhua West Road, Weihai, 264209 Shandong Province China
| | - Guanghua Fan
- />Department of Optoelectronics Science, Harbin Institute of Technology, Weihai Campus, 2# Wenhua West Road, Weihai, 264209 Shandong Province China
| | - Keya Zhou
- />Department of Physics, Harbin Institute of Technology, 91# West Dazhi Street, Harbin, 150001 Heilongjiang Province China
| | - Shiliang Qu
- />Department of Optoelectronics Science, Harbin Institute of Technology, Weihai Campus, 2# Wenhua West Road, Weihai, 264209 Shandong Province China
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16
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Kayes MI, Leu PW. Comparative study of absorption in tilted silicon nanowire arrays for photovoltaics. Nanoscale Res Lett 2014; 9:620. [PMID: 25435833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/22/2014] [Indexed: 06/04/2023]
Abstract
Silicon nanowire arrays have been shown to demonstrate light trapping properties and promising potential for next-generation photovoltaics. In this paper, we show that the absorption enhancement in vertical nanowire arrays on a perfectly electric conductor can be further improved through tilting. Vertical nanowire arrays have a 66.2% improvement in ultimate efficiency over an ideal double-pass thin film of the equivalent amount of material. Tilted nanowire arrays, with the same amount of material, exhibit improved performance over vertical nanowire arrays across a broad range of tilt angles (from 38° to 72°). The optimum tilt of 53° has an improvement of 8.6% over that of vertical nanowire arrays and 80.4% over that of the ideal double-pass thin film. Tilted nanowire arrays exhibit improved absorption over the solar spectrum compared with vertical nanowires since the tilt allows for the excitation of additional modes besides the HE 1m modes that are excited at normal incidence. We also observed that tilted nanowire arrays have improved performance over vertical nanowire arrays for a large range of incidence angles (under about 60°).
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Affiliation(s)
- Md Imrul Kayes
- Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Paul W Leu
- Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
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17
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Kayes MI, Leu PW. Comparative study of absorption in tilted silicon nanowire arrays for photovoltaics. Nanoscale Res Lett 2014; 9:620. [PMID: 25435833 PMCID: PMC4244147 DOI: 10.1186/1556-276x-9-620] [Citation(s) in RCA: 3] [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] [Received: 07/28/2014] [Accepted: 09/22/2014] [Indexed: 06/06/2023]
Abstract
Silicon nanowire arrays have been shown to demonstrate light trapping properties and promising potential for next-generation photovoltaics. In this paper, we show that the absorption enhancement in vertical nanowire arrays on a perfectly electric conductor can be further improved through tilting. Vertical nanowire arrays have a 66.2% improvement in ultimate efficiency over an ideal double-pass thin film of the equivalent amount of material. Tilted nanowire arrays, with the same amount of material, exhibit improved performance over vertical nanowire arrays across a broad range of tilt angles (from 38° to 72°). The optimum tilt of 53° has an improvement of 8.6% over that of vertical nanowire arrays and 80.4% over that of the ideal double-pass thin film. Tilted nanowire arrays exhibit improved absorption over the solar spectrum compared with vertical nanowires since the tilt allows for the excitation of additional modes besides the HE 1m modes that are excited at normal incidence. We also observed that tilted nanowire arrays have improved performance over vertical nanowire arrays for a large range of incidence angles (under about 60°).
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Affiliation(s)
- Md Imrul Kayes
- Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Paul W Leu
- Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
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18
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Zhang C, Li X, Shang A, Wu S, Zhan Y, Yang Z. Design of dual-diameter nanoholes for efficient solar-light harvesting. Nanoscale Res Lett 2014; 9:481. [PMID: 25258605 PMCID: PMC4164666 DOI: 10.1186/1556-276x-9-481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 09/07/2014] [Indexed: 06/03/2023]
Abstract
UNLABELLED A dual-diameter nanohole (DNH) photovoltaic system is proposed, where a top (bottom) layer with large (small) nanoholes is used to improve the absorption for the short-wavelength (long-wavelength) solar incidence, leading to a broadband light absorption enhancement. Through three-dimensional finite-element simulation, the core device parameters, including the lattice constant, nanohole diameters, and nanohole depths, are engineered in order to realize the best light-matter coupling between nanostructured silicon and solar spectrum. The designed bare DNH system exhibits an outstanding absorption capability with a photocurrent density (under perfect internal quantum process) predicted to be 27.93 mA/cm(2), which is 17.39%, 26.17%, and over 100% higher than the best single-nanohole (SNH) system, SNH system with an identical Si volume, and equivalent planar configuration, respectively. Considering the fabrication feasibility, a modified DNH system with an anti-reflection coating and back silver reflector is examined by simulating both optical absorption and carrier transport in a coupled way in frequency and three-dimensional spatial domains, achieving a light-conversion efficiency of 13.72%. PACS 85.60.-q; Optoelectronic device; 84.60.Jt; Photovoltaic conversion.
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Affiliation(s)
- Cheng Zhang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Xiaofeng Li
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Aixue Shang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Shaolong Wu
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Yaohui Zhan
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
| | - Zhenhai Yang
- College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
- Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China
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19
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Tao F, Hiralal P, Ren L, Wang Y, Dai Q, Amaratunga GAJ, Zhou H. Tuning the peak position of subwavelength silica nanosphere broadband antireflection coatings. Nanoscale Res Lett 2014; 9:361. [PMID: 25136278 PMCID: PMC4128290 DOI: 10.1186/1556-276x-9-361] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 07/09/2014] [Indexed: 05/31/2023]
Abstract
Subwavelength nanostructures are considered as promising building blocks for antireflection and light trapping applications. In this study, we demonstrate excellent broadband antireflection effect from thin films of monolayer silica nanospheres with a diameter of 100 nm prepared by Langmuir-Blodgett method on glass substrates. With a single layer of compact silica nanosphere thin film coated on both sides of a glass, we achieved maximum transmittance of 99% at 560 nm. Furthermore, the optical transmission peak of the nanosphere thin films can be tuned over the UV-visible range by changing processing parameters during Langmuir-Blodgett deposition. The tunable optical transmission peaks of the Langmuir-Blodgett films were correlated with deposition parameters such as surface pressure, surfactant concentration, ageing of suspensions and annealing effect. Such peak-tunable broadband antireflection coating has wide applications in diversified industries such as solar cells, windows, displays and lenses.
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Affiliation(s)
- Fei Tao
- School of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, 2199 Lishui Road, Shenzhen, Guangdong 518055, China
| | - Pritesh Hiralal
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK
| | - Lianbing Ren
- Guangdong Key Lab of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, 2199 Lishui Road, Shenzhen, Guangdong 518055, China
| | - Yong Wang
- Guangdong Key Lab of Nano-Micro Materials Research, School of Chemical Biology & Biotechnology, Peking University Shenzhen Graduate School, 2199 Lishui Road, Shenzhen, Guangdong 518055, China
| | - Qing Dai
- National Center for Nanoscience and Technology, Chinese Academy of Sciences, No.11 ZhongGuanCun BeiYiTiao, Beijing 100190, China
| | - Gehan AJ Amaratunga
- Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK
| | - Hang Zhou
- School of Electronic and Computer Engineering, Peking University Shenzhen Graduate School, 2199 Lishui Road, Shenzhen, Guangdong 518055, China
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Kim C, Choi H, Kim JI, Lee S, Kim J, Lee W, Hwang T, Kang S, Moon T, Park B. Improving scattering layer through mixture of nanoporous spheres and nanoparticles in ZnO-based dye-sensitized solar cells. Nanoscale Res Lett 2014; 9:295. [PMID: 24982606 PMCID: PMC4062895 DOI: 10.1186/1556-276x-9-295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 05/28/2014] [Indexed: 06/03/2023]
Abstract
A scattering layer is utilized by mixing nanoporous spheres and nanoparticles in ZnO-based dye-sensitized solar cells. Hundred-nanometer-sized ZnO spheres consisting of approximately 35-nm-sized nanoparticles provide not only effective light scattering but also a large surface area. Furthermore, ZnO nanoparticles are added to the scattering layer to facilitate charge transport and increase the surface area as filling up large voids. The mixed scattering layer of nanoparticles and nanoporous spheres on top of the nanoparticle-based electrode (bilayer geometry) improves solar cell efficiency by enhancing both the short-circuit current (J sc) and fill factor (FF), compared to the layer consisting of only nanoparticles or nanoporous spheres.
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Affiliation(s)
- Chohui Kim
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Hongsik Choi
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Jae Ik Kim
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Sangheon Lee
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Jinhyun Kim
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Woojin Lee
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Taehyun Hwang
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Suji Kang
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
| | - Taeho Moon
- Department of Materials Science and Engineering, Dankook University, Chungnam, Cheonan 330-714, South Korea
| | - Byungwoo Park
- WCU Hybrid Materials Program, Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, South Korea
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