Effects of L-Cysteine on the Photoluminescence Properties of ZnO:S Quantum Dots

Abstract:

ZnO:S quantum dots (QDs) were synthesized by a microwave hydrothermal method. The effects of L-cysteine (L-cys) on the crystal structure, size, morphology, band gap energy and photoluminescence (PL) properties were studied by XRD, EDS, TEM, FTIR, DRS and PL spectroscopy, respectively. The XRD results showed that all samples had a wurtzite structure ZnO crystal structure and the average crystallite size was 8.4, 5.8, and 9.2 nm for ZnO, ZnO:S and L-cys capped ZnO:S (LZOS) QDs, respectively. The EDS, HRTEM and FTIR results confirmed L-cys was capped on the surface of ZnO:S QDs. It was found that the band gap energy was 3.25, 3.29 and 3.31 eV for ZnO, ZnO:S and LZOS QDs, successively. PL spectrum of ZnO QDs showed two emission peaks in the UV and visible region, respectively. When doping S into ZnO, the intensity of the UV emission reduced, while the intensity of the visible emission dramatically increased. Also, L-cys coated obviously enhanced the PL intensity of ZnO:S QDs. This work suggested that LZOS QDs could be applied in luminescent devices.

• Periodical: Key Engineering Materials (Volume 842)
• Pages: 242-250
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.842.242
• Online since: May 2020
• Authors: Wen Dai, Shu Wang Duo, Xiao Xia Li, Zhong Chen*, Zi Chuan Zheng, Zhen Yu Chen, Xiao Yu Lu
• Keywords: L-Cysteine, Photoluminescence, Quantum Dots, ZnO

References

[1] K. Sivashanmugan, C.H. Lin, S.H. Hsu, T.F. Guo, T.C. Wen, Interfacial engineering of ZnO surface modified with poly-vinylpyrrolidone and p-aminobenzoic acid for high-performance perovskite solar cells, Mat. Chem. Phys. 219 (2018) 90-95.

DOI: 10.1016/j.matchemphys.2018.08.022

[2] M.S. Park, J.H. Lee, Y. Park, R. Yoo, S. Park, H. Jung, W. Kim, H.S. Lee, W. Lee, Doping effects of ZnO quantum dots on the sensitive and selective detection of acetylene for dissolved-gas analysis applications of transformer oil, Sensor. Actuat. B-Chem. 299 (2019) 126992-127001.

DOI: 10.1016/j.snb.2019.126992

[3] R. Alsharafi, Y.B. Zhu, F.S. Li, Z.W. Xu, H.L. Hu, T.L. Guo, Boosting the performance of quantum dot light-emitting diodes with Mg and PVP Co-doped ZnO as electron transport layer, Org. Electron. 75 (2019) 105411-105417.

DOI: 10.1016/j.orgel.2019.105411

[4] S. Kaviya, S. Kabila, K.V. Jayasree, Room temperature biosynthesis of greatly stable fluorescent ZnO quantum dots for the selective detection of Cr3+ ions, Mater. Res. Bull. 95 (2017) 163-168.

DOI: 10.1016/j.materresbull.2017.07.025

[5] A.N. Okte, D. Karamanis, E. Chalkia, D. Tuncel, The effect of ZnO or TiO2 loaded nanoparticles on the adsorption and photocatalytic performance of Cu-BTC and ZIF-8 MOFs, Mater. Chem. Phys. 187 (2017) 5-10.

DOI: 10.1016/j.matchemphys.2016.11.059

[6] P. Bharathi, M. K. Mohan, V. Shalini, S. Harish, M. Navaneethan, J. Archana, M. G. Kumar, P. Dhivya, S. Ponnusamy, M. Shimomura, Y. Hayakawa, Growth and influence of Gd doping on ZnO nanostructures for enhanced optical, structural properties and gas sensing applications, Appl. Surf. Sci. 499 (2020)143857-143867.

DOI: 10.1016/j.apsusc.2019.143857

[7] Z.Y. Zhou, F. Zhang, J.L. Wang, X.H. Zhang, W.Y. Xu, R.F. Wu, L. Liao, X.L. Wang, J.C. Wei, L-cysteine modified ZnO: Small change while great progress, Mat. Sci. Eng. C 103 (2019) 109818-109824.

DOI: 10.1016/j.msec.2019.109818

[8] Y.B. Jin, J.T. Long, X. Ma, T.H. Zhou, Z.Z. Zhang, H.X. Lin, J.L. Long, X.X. Wang, Synthesis of caged iodine-modified ZnO nanomaterials and study on their visible light photocatalytic antibacterial properties, Appl. Catal. B-Environ. 256 (2019) 117873-117880.

DOI: 10.1016/j.apcatb.2019.117873

[9] M. Faisal, Farid A. Harraz, A.E. Al-Salami, S.A. Al-Sayari, A. Al-Hajry, M.S. Al-Assiri, Polythiophene/ZnO nanocomposite-modified glassy carbon electrode as efficient electrochemical hydrazine sensor, Mat. Chem. Phys. 214 (2018) 126-134.

DOI: 10.1016/j.matchemphys.2018.04.085

[10] F. Copur, N. Bekar, E. Zor, S. Alpaydin, H. Bingol, Nanopaper-based photoluminescent enantioselective sensing of L-Lysine by L-Cysteine modified carbon quantum dots, Sensor. Actuat. B-Chem. 279 (2019) 305-312.

DOI: 10.1016/j.snb.2018.10.026

[11] A. Samar, P.E.C. Lai, Selective detection of ZnO nanoparticles in aqueous suspension by capillary electrophoresis analysis using dithiothreitol and L-cysteine adsorbates, Talanta 169 (2017) 115-122.

DOI: 10.1016/j.talanta.2017.03.019

[12] K.X. Zhang, Y.X. Yu, S.Q. Sun, Facile synthesis l-cysteine capped CdS:Eu quantum dots and their Hg2+ sensitive properties, Appl. Surf. Sci. 276 (2013) 333-339.

DOI: 10.1016/j.apsusc.2013.03.093

[13] T. Gong, J. Liu, X. Liu, J. Liu, J. Xiang, Y. Wu, A sensitive and selective sensing platform based on CdTe QDs in the presence of L-cysteine for detection of silver, mercury and copper ions in water and various drinks, Food Chem. 213 (2016) 306-312.

DOI: 10.1016/j.foodchem.2016.06.091

[14] G.M. Durán, M.R. Plata, M. Zougagh, A.M. Contento, Á. Ríos, Microwave-assisted synthesis of water soluble thiol capped CdSe/ZnS quantum dots and its interaction with sulfonylurea herbicides, J. Colloid. Interf. Sci. 428 (2014) 235-241.

DOI: 10.1016/j.jcis.2014.04.050

[15] X.X. Li, Z. Chen, Z.Y. Yu, X.Y. Huang, Q.M. Yu, S.Z. Wang, Z.M. Wang, D.Q. Wan, M.H. Luo, Microwave-assisted synthesis of water soluble thiol capped CdSe/ZnS quantum dots and its interaction with sulfonylurea herbicides, J. Lumin. 190 (2017) 364-370.

DOI: 10.1016/j.jcis.2014.04.050

[16] E.F. Kaelble, Handbook of X-rays, McGraw-Hill, New York, (1967).

[17] Z. Chen, S. Zhou, Y. Li, X.X. Li, Y.S Li, W. Sun, G.H. Liu, N. Chen and G.P. Du, Strong blue luminescence of O2--doped ZnS nanoparticles synthesized by a low temperature solid state reaction method, Mat. Sci. Semicon. Proc. 16 (2013) 833-837.

DOI: 10.1016/j.mssp.2013.01.007

[18] D.A. Reddy, S. Sambasivam, G. Murali, B. Poornaprakash, R.P. Vijayalakshmi, Y. Aparna, B.K. Reddy, J.L. Rao, Effect of Mn co-doping on the structural, optical and magnetic properties of ZnS:Cr nanoparticles, J. Alloy. Compd. 537 (2012) 208-215.

DOI: 10.1016/j.jallcom.2012.04.115

[19] J.I. Pankove, Optical Processes in Semiconductors, Prentice-Hall Inc., USA, (1971).

[20] S. Locmelis, C. Brunig, M. Binnewies, A. Borger, K.D. Becker, T. Homann, T. Bredow, Optical band gap in the system ZnO1-xSx. An experimental and quantum chemical study, J. Mater. Sci. 42 (2007) 1965-1971.

DOI: 10.1007/s10853-006-0415-y

[21] Q. Shan, K. Li, Z. Xue, Y. Lin, H. Yin, R. Zhu, Photogenerated carriers transport behaviors in L-cysteine capped ZnSe core-shell quantum dots, J. Appl. Phys. 119 (2016) 054301-054307.

DOI: 10.1063/1.4940362

[22] T.J. Sun, J.S. Qiu, C.H. Liang, Controllable fabrication and photocatalytic activity of ZnO nanobelt arrays, J. Phys. Chem. C 112 (2008) 715-721.

DOI: 10.1021/jp710071f

[23] Y.Q. Chen, J. Jiang, Z.Y. He, Y. Su, D. Cai, L. Chen, Growth mechanism and characterization of ZnO microbelts and self-assembled microcombs, Mater. Lett. 59 (2005) 3280-3283.

DOI: 10.1016/j.matlet.2005.05.059

[24] Y.C. Kong, D.P. Yu, B. Zhang, W. Fang, S.Q. Feng, Ultraviolet-emitting ZnO nanowires synthesized by a physical vapor deposition approach, Appl. Phys. Lett., 78 (2001) 407-409.

DOI: 10.1063/1.1342050

[25] L.L. Zhang, C.X. Guo, J.G. Chen, J.T. Hu, The synthesis of one-dimensional controllable ZnO microrods, Chinese Phys. 14 (2005) 0586-0591.

[26] K.T. Roro, J.K. Dangbegnon, S.S. Varaya, A.W.R. Leitch, J.R. Botha, Influence of metal organic chemical vapor deposition growth parameters on the luminescent properties of ZnO thin films deposited on glass substrates, J. Appl. Phys. 103 (2008) 053516-053524.

DOI: 10.1063/1.2873872

[27] S.S. Warule, N.S. Chaudhari, R.T. Shisode, K.V. Desa, B.B. Kale, M.A. More, Decoration of CdS nanoparticles on 3D self-assembled ZnO nanorods: a single-step process with enhanced field emission behaviour, Cryst. Eng. Comm. 17 (2015) 140-148.

DOI: 10.1039/c4ce01738b

[28] N. Qin, Q. Xiang, H.B. Zhao, J.C. Zhang, J.Q. Xu, Evolution of ZnO microstructures from hexagonal disk to prismoid, prism and pyramid and their crystal facet-dependent gas sensing properties, Cryst. Eng. Comm. 16 (2014) 7062-7073.

DOI: 10.1039/c4ce00637b

[29] D.C. Reynolds, D.C. Look, B. Jogai, Fine structure on the green band in ZnO, J. Appl. Phys. 89 (2001) 6189-6191.

DOI: 10.1063/1.1356432

[30] A.V. Dijken, E. Meulenkamp, D. Vanmaekelbergh, A. Meijerink, J. Phys. Chem. B 104 (2000) 1715-1723.

[31] Y.W. Heo, D.P. Norton, S.J. Pearton, Origin of green luminescence in ZnO thin film grown by molecular-beam epitaxy, J. Appl. Phys. 98 (2005) 073502-073508.

DOI: 10.1063/1.2064308

[32] A.B. Djurisic, W.C.H. Choy, V.A.L. Roy, Y.H. Leung, C. Y.Kwong, K.W. Cheah, T.K. Gundu Rao, W.K. Chan, H.F. Lui, C. Surya, Photoluminescence and Electron Paramagnetic Resonance of ZnO Tetrapod Structures, Adv. Funct. Mater. 14 (2004) 856-864.

DOI: 10.1002/adfm.200305082

[33] H.F. Zhang, Z. Tao, W.G. Xu, S.X. Lu, F. Yuan, First-principles study of dopants and defects in S-doped ZnO and its effect on photocatalytic activity, Comp. Mater. Sci. 58 (2012) 119-124.

DOI: 10.1016/j.commatsci.2012.01.016

[34] E. Moghaddam, A.A. Youzbashi, A. Kazemzadeh, M.J. Eshraghi, Preparation of surface-modified ZnO quantum dots through an ultrasound assisted sol–gel process, Appl. Surf. Sci. 346 (2015) 111-114.

DOI: 10.1016/j.apsusc.2015.03.207

[35] Z. Qian, J. Ma, X. Shan, H. Feng, L. Shao, J. Chen, Highly Luminescent N-Doped Carbon Quantum Dots as an Effective Multifunctional Fluorescence Sensing Platform, Chem. Eur. J. 20 (2014) 2254-2263.

DOI: 10.1002/chem.201304374

[36] J. Mei, Y. Hong, J.W.Y. Lam, A. Qin, Y. Tang, B.Z. Tang, Aggregation-Induced Emission: The Whole Is More Brilliant than the Parts, Adv. Mater. 26 (2014) 5429-5479.

DOI: 10.1002/adma.201401356

[37] Z. Wu, J. Liu, Y. Gao, H. Liu, T. Li, H. Zou, Z. Wang, K. Zhang, Y. Wang, H. Zhang, B. Yang, Assembly-Induced Enhancement of Cu Nanoclusters Luminescence with Mechanochromic Property, J. Am. Chem. Soc. 137 (2015) 12906-12918.

DOI: 10.1021/jacs.5b06550