DataVXJournal of Materials SciencePaper
journal article·2024-06Open access

Impact of aluminium doping in magnesium-doped zinc oxide thin films by sputtering for photovoltaic applications

Mirza Mustafizur Rahman, Kazi Sajedur Rahman, Md. Rokonuzzaman, Bibi Zulaika Bhari, Norasikin Ahmad Ludin, Mohd Adib Ibrahim

Journal of Materials Science· Volume 59· Issue 21
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Abstract

Abstract In this study, Mg-doped zinc oxide (MZO) thin films were deposited through radio frequency (RF) sputtering for different substrate temperatures ranging from room temperature (25 °C) to 350 °C. XRD analysis depicted that the higher substrate temperatures lead to increased crystallite size. From the UV–Vis spectroscopy, transmittance (T) was found approximately 95% and the optical band energy gap (Eg) was determined around 3.70 eV. Hall effect measurement system measured the carrier concentration and resistivity of all films in the order of 1014 cm−3 and 103 Ω-cm, respectively. Since the structural and optoelectrical properties of the MZO films were not significantly affected by the substrate temperatures, Aluminium (Al) was co-doped in the MZO film to improve structural and optoelectrical properties. As a result, the carrier concentration of Al doped MZO (AMZO) films was increased up to ~ 1020 cm−3 from ~ 1014 cm3 (MZO), and the resistivity was decreased up to ~ 10–1 Ω-cm from 103 Ω-cm (MZO) representing the significant changes in electrical properties without affecting the transmittance. This study opens a pathway for improving the MZO buffer layer that can enhance the cell performance of CdTe solar cells. Graphical abstract
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Electronic materials

OpenAlex topics: ZnO doping and properties · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties

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References (72)

Show source-provided references
1. Alaani MAR et al (2021) Optical properties of magnesium-zinc oxide for thin film photovoltaics. Materials 14(19):5649. https://doi.org/10.3390/MA1419564910.3390/MA14195649 ↗
2. Bhari BZ, Rahman KS, Chelvanathan P, Ibrahim MA (2023) Plausibility of ultrathin CdTe solar cells: probing the beneficial role of MgZnO (MZO) high resistivity transparent (HRT) layer. J Mater Sci 58(40):15748–15761. https://doi.org/10.1007/S10853-023-09001-5/METRICS10.1007/S10853-023-09001-5/METRICS ↗
3. Abdallah B, Jazmati AK, Refaai R (2017) Oxygen effect on structural and optical properties of ZnO thin films deposited by RF magnetron sputtering. Mater Res 20(3):607–612. https://doi.org/10.1590/1980-5373-MR-2016-047810.1590/1980-5373-MR-2016-0478 ↗
4. Yan C et al (2018) Cu2ZnSnS4 solar cells with over 10% power conversion efficiency enabled by heterojunction heat treatment. Nat Energy 3(9):764–772. https://doi.org/10.1038/s41560-018-0206-010.1038/s41560-018-0206-0 ↗
5. Muhammed A, Asere TG, Diriba TF (2024) Photocatalytic and antimicrobial properties of ZnO and Mg-Doped ZnO nanoparticles synthesized using lupinus albus leaf extract. ACS Omega 9(2):2480–2490. https://doi.org/10.1021/ACSOMEGA.3C07093/ASSET/IMAGES/LARGE/AO3C07093_0009.JPEG10.1021/ACSOMEGA.3C07093/ASSET/IMAGES/LARGE/AO3C07093_0009.JPEG ↗
6. Adesoye S, Al Abdullah S, Nowlin K, Dellinger K (2022) Mg-Doped ZnO nanoparticles with tunable band gaps for surface-enhanced raman scattering (SERS)-based sensing. Nanomaterials 12(20):3564. https://doi.org/10.3390/NANO1220356410.3390/NANO12203564 ↗
7. Bittau F et al (2018) Analysis and optimisation of the glass/TCO/MZO stack for thin film CdTe solar cells. Sol Energy Mater Sol Cells 187:15–22. https://doi.org/10.1016/J.SOLMAT.2018.07.01910.1016/J.SOLMAT.2018.07.019 ↗
8. Munshi AH et al (2018) Polycrystalline CdSeTe/CdTe absorber cells with 28 mA/cm2 short-circuit current. IEEE J Photovolt 8(1):310–314. https://doi.org/10.1109/JPHOTOV.2017.277513910.1109/JPHOTOV.2017.2775139 ↗
9. Jogi A, Ayana A, Rajendra BV (2023) Modulation of optical and photoluminescence properties of ZnO thin films by Mg dopant. J Mater Sci Mater Electron 34(7):1–11. https://doi.org/10.1007/S10854-023-09999-Z/FIGURES/810.1007/S10854-023-09999-Z/FIGURES/8 ↗
10. Loeza-Poot M, Mis-Fernández R, Rimmaudo I, Camacho-Espinosa E, Peña JL (2019) Novel sputtering method to obtain wide band gap and low resistivity in as-deposited magnesium doped zinc oxide films. Mater Sci Semicond Process 104:104646. https://doi.org/10.1016/J.MSSP.2019.10464610.1016/J.MSSP.2019.104646 ↗
11. Majeed MH, Aycibin M, Imer AG (2022) Study of the electronic, structure and electrical properties of Mg and Y single doped and Mg/Y co-doped ZnO: Experimental and theoretical studies. Optik 258:168949. https://doi.org/10.1016/J.IJLEO.2022.16894910.1016/J.IJLEO.2022.168949 ↗
12. Duinong M et al (2022) Effect of gamma radiation on structural and optical properties of ZnO and Mg-Doped ZnO films paired with monte carlo simulation. Coatings 12(10):1590. https://doi.org/10.3390/COATINGS1210159010.3390/COATINGS12101590 ↗
13. Taibarei NO et al (2023) High-pressure synthesis of cubic ZnO and Its solid solutions with MgO Doped with Li, Na, and K. Materials (Basel) 16(15):5341. https://doi.org/10.3390/MA16155341/S110.3390/MA16155341/S1 ↗
14. Giri P, Chakrabarti P (2016) Effect of Mg doping in ZnO buffer layer on ZnO thin film devices for electronic applications. Superlattices Microstruct 93:248–260. https://doi.org/10.1016/J.SPMI.2016.03.02410.1016/J.SPMI.2016.03.024 ↗
15. Artegiani E et al (2019) Analysis of magnesium zinc oxide layers for high efficiency CdTe devices. Thin Solid Films 672:22–25. https://doi.org/10.1016/J.TSF.2019.01.00410.1016/J.TSF.2019.01.004 ↗
16. Othman ZJ, Matoussi A (2016) Morphological and optical studies of zinc oxide doped MgO. J Alloys Compd 671:366–371. https://doi.org/10.1016/J.JALLCOM.2016.02.06910.1016/J.JALLCOM.2016.02.069 ↗
17. Wang H et al (2020) Synthesis and characterization of F-doped MgZnO films prepared by RF magnetron co-sputtering. Appl Surf Sci 503:144273. https://doi.org/10.1016/J.APSUSC.2019.14427310.1016/J.APSUSC.2019.144273 ↗
18. Bhari BZ, Rahman KS, Chelvanathan P, Ibrahim MA (2023) Tailoring the structural and optical properties of MZO thin film. Mater Lett 339:134097. https://doi.org/10.1016/j.matlet.2023.13409710.1016/j.matlet.2023.134097 ↗
19. Abliz A (2021) Hydrogenation of Mg-Doped InGaZnO thin-film transistors for enhanced electrical performance and stability. IEEE Trans Electron Devices 68(7):3379–3383. https://doi.org/10.1109/TED.2021.307721410.1109/TED.2021.3077214 ↗
20. Tsay CY, Chen ST, Tsai HM (2023) Tailoring of the structural, optical, and electrical characteristics of sol-gel-derived magnesium-zinc-oxide wide-bandgap semiconductor thin films via gallium doping. Mater 16(19):6389. https://doi.org/10.3390/MA1619638910.3390/MA16196389 ↗
21. Doroody C et al (2023) Incorporation of magnesium-doped zinc oxide (MZO) HRT layer in cadmium telluride (CdTe) solar cells. Results Phys 47:106337. https://doi.org/10.1016/J.RINP.2023.10633710.1016/J.RINP.2023.106337 ↗
22. Ambedkar AK et al (2020) Structural, optical and thermoelectric properties of Al-doped ZnO thin films prepared by spray pyrolysis. Surf Interfaces 19:100504. https://doi.org/10.1016/J.SURFIN.2020.10050410.1016/J.SURFIN.2020.100504 ↗
23. Chen FK, Tsai DC, Chang ZC, Chen EC, Shieu FS (2020) Influence of Al content and annealing atmosphere on optoelectronic characteristics of Al:ZnO thin films. Appl Phys A Mater Sci Process 126(9):1–11. https://doi.org/10.1007/S00339-020-03835-5/METRICS10.1007/S00339-020-03835-5/METRICS ↗
24. Mohar RS, Sugihartono I, Fauzia V, Umar AA (2020) Dependence of optical properties of Mg-doped ZnO nanorods on Al dopant. Surf Interfaces 19:100518. https://doi.org/10.1016/J.SURFIN.2020.10051810.1016/J.SURFIN.2020.100518 ↗
25. Roul MK, Pradhan SK, Song KD, Bahoura MJ (2019) RF magnetron-sputtered Al–ZnO/Ag/Al–ZnO (AAA) multilayer electrode for transparent and flexible thin-film heater. J Mater Sci 54(9):7062–7071. https://doi.org/10.1007/S10853-019-03376-0/METRICS10.1007/S10853-019-03376-0/METRICS ↗
26. Wang ZY et al (2015) The impact of thickness and thermal annealing on refractive index for aluminum oxide thin films deposited by atomic layer deposition. Nanoscale Res Lett 10(1):1–6. https://doi.org/10.1186/S11671-015-0757-Y/FIGURES/510.1186/S11671-015-0757-Y/FIGURES/5 ↗
27. Samoilenko Y et al (2020) Stable magnesium zinc oxide by reactive Co-Sputtering for CdTe-based solar cells. Sol Energy Mater Sol Cells 210:110521. https://doi.org/10.1016/J.SOLMAT.2020.11052110.1016/J.SOLMAT.2020.110521 ↗
28. Ablekim T et al (2019) Tailoring MgZnO/CdSeTe interfaces for photovoltaics. IEEE J Photovolt 9(3):888–892. https://doi.org/10.1109/JPHOTOV.2018.287798210.1109/JPHOTOV.2018.2877982 ↗
29. High temperature X-ray diffraction | Rigaku Global Website. https://www.rigaku.com/techniques/xrd/high-temperature-x-ray-diffraction. Accessed 29 Mar 2024
30. Westphal ER et al (2021) Temperature-dependent x-ray fluorescent response from thermographic phosphors under x-ray excitation. Appl Phys Lett 119(3):34103. https://doi.org/10.1063/5.0053469/13155521/034103_1_ACCEPTED_MANUSCRIPT.PDF10.1063/5.0053469/13155521/034103_1_ACCEPTED_MANUSCRIPT.PDF ↗
31. Fatima K, Noor H, Ali A, Monakhov E, Asghar M (2021) Annealing effect on seebeck coefficient of SiGe thin films deposited on quartz substrate. Coatings 11(12):1435. https://doi.org/10.3390/COATINGS1112143510.3390/COATINGS11121435 ↗
32. Serafińczuk J et al (2020) Determination of dislocation density in GaN/sapphire layers using XRD measurements carried out from the edge of the sample. J Alloys Compd 825:153838. https://doi.org/10.1016/J.JALLCOM.2020.15383810.1016/J.JALLCOM.2020.153838 ↗
33. Youssef S, Combette P, Podlecki J, Asmar RA, Foucaran A (2009) Structural and optical characterization of ZnO thin films deposited by reactive RF magnetron sputtering. Cryst Growth Des 9(2):1088–1094. https://doi.org/10.1021/CG800905E/ASSET/IMAGES/MEDIUM/CG-2008-00905E_0001.GIF10.1021/CG800905E/ASSET/IMAGES/MEDIUM/CG-2008-00905E_0001.GIF ↗
34. Guermat N, Daranfed W, Bouchama I, Bouarissa N (2021) Investigation of structural, morphological, optical and electrical properties of Co/Ni co-doped ZnO thin films. J Mol Struct 1225:129134. https://doi.org/10.1016/j.molstruc.2020.12913410.1016/j.molstruc.2020.129134 ↗
35. Guermat N, Darenfad W, Kamel M (2021) Annealing temperature effect on optoelectronic properties of ZnO/8%F/1%Co/3%Mg Thin films synthesis by spray pyrolysis. Alger J Eng Archit Urban 5(5):873–880
36. Daranfed W, Guermat N, Mirouh K (2020) Extended wide band gap amorphous ZnO thin films deposited by spray pyrolysis. Ann Chim Sci des Mater 44(5):347–352. https://doi.org/10.18280/acsm.44050710.18280/acsm.440507 ↗
37. Zahedi F, Dariani RS, Rozati SM (2013) Effect of substrate temperature on the properties of ZnO thin films prepared by spray pyrolysis. Mater Sci Semicond Process 16(2):245–249. https://doi.org/10.1016/J.MSSP.2012.11.00510.1016/J.MSSP.2012.11.005 ↗
38. Zhao Y, Jiang Y, Fang Y (2007) The influence of substrate temperature on ZnO thin films prepared by PLD technique. J Cryst Growth 307(2):278–282. https://doi.org/10.1016/J.JCRYSGRO.2007.07.02510.1016/J.JCRYSGRO.2007.07.025 ↗
39. Karaköse E, Çolak H (2017) Effect of substrate temperature on the structural properties of ZnO nanorods. Energy 141:50–55. https://doi.org/10.1016/J.ENERGY.2017.09.08010.1016/J.ENERGY.2017.09.080 ↗
40. Rosly HN et al (2021) The role of deposition temperature in the photovoltaic properties of RF-Sputtered CdSe thin films. Cryst 11(1):73. https://doi.org/10.3390/CRYST1101007310.3390/CRYST11010073 ↗
41. Zhang X, Liu X, Zhang X, Wang H, Wang Q, Ma H (2012) Influence of low temperature annealing on structure and photoelectric properties of MgZnO thin films. Adv Mater Res 562–564:142–145. https://doi.org/10.4028/WWW.SCIENTIFIC.NET/AMR.562-564.14210.4028/WWW.SCIENTIFIC.NET/AMR.562-564.142 ↗
42. Mahjabin S et al (2023) Boosting perovskite solar cell stability through a sputtered mo-doped tungsten oxide (WOx) electron transport layer. Energy Fuels 37(24):19860–19869. https://doi.org/10.1021/ACS.ENERGYFUELS.3C03126/SUPPL_FILE/EF3C03126_SI_001.PDF10.1021/ACS.ENERGYFUELS.3C03126/SUPPL_FILE/EF3C03126_SI_001.PDF ↗
43. Ahmed S et al (2024) RF sputtered GZO thin films for enhancing electron transport in perovskite solar cells. Optical Mater 149:115006. https://doi.org/10.1016/J.OPTMAT.2024.11500610.1016/J.OPTMAT.2024.115006 ↗
44. Yang LC, Jung DR, Po FR, Hus CH, Fang JS (2020) Tailoring bandgap and electrical properties of magnesium-doped aluminum zinc oxide films deposited by reactive sputtering using metallic Mg and Al–Zn targets. Coatings 10(8):708. https://doi.org/10.3390/COATINGS1008070810.3390/COATINGS10080708 ↗
45. Mahjabin S et al (2022) Investigation of morphological, optical, and dielectric properties of RF sputtered WOx thin films for optoelectronic applications. Nanomaterials 12(19):3467. https://doi.org/10.3390/nano1219346710.3390/nano12193467 ↗
46. Das T et al (2023) Influence of Mg doping on structural, dielectric properties and Urbach energy in ZnO ceramics. J Mater Sci Mater Electron 34(31):1–11. https://doi.org/10.1007/S10854-023-11497-1/METRICS10.1007/S10854-023-11497-1/METRICS ↗
47. Chen H, Liu W, Qin Z (2017) ZnO/ZnFe2O4 nanocomposite as a broad-spectrum photo-fenton-like photocatalyst with near-infrared activity. Catal Sci Technol 7(11):2236–2244. https://doi.org/10.1039/C7CY00308K10.1039/C7CY00308K ↗
48. Li Z, Chen H, Liu W (2018) Full-spectrum photocatalytic activity of ZnO/CuO/ZnFe2O4 nanocomposite as a photofenton-like catalyst. Catal 8(11):557. https://doi.org/10.3390/CATAL811055710.3390/CATAL8110557 ↗
49. Chen H, Liu W, Hu B, Qin Z, Liu H (2017) A full-spectrum photocatalyst with strong near-infrared photoactivity derived from synergy of nano-heterostructured Er3+-doped multi-phase oxides. Nanoscale 9(47):18940–18950. https://doi.org/10.1039/C7NR08090E10.1039/C7NR08090E ↗
50. Chen JL, Zhu JH (2019) A query on the Mg 2p binding energy of MgO. Res Chem Intermed 45(3):947–950. https://doi.org/10.1007/S11164-018-3654-Z10.1007/S11164-018-3654-Z ↗
51. Yao HB, Li Y, Wee ATS (2000) An XPS investigation of the oxidation/corrosion of melt-spun Mg. Appl Surf Sci 158(1–2):112–119. https://doi.org/10.1016/S0169-4332(99)00593-010.1016/S0169-4332(99)00593-0 ↗
52. Santoshkumar B et al (2017) Influence of defect luminescence and structural modification on the electrical properties of magnesium doped zinc oxide nanorods. Superlattices Microstruct 106:58–66. https://doi.org/10.1016/J.SPMI.2017.03.03910.1016/J.SPMI.2017.03.039 ↗
53. Dhawan R, Panda E (2019) Mg addition in undoped and Al-doped ZnO films: fabricating near UV transparent conductor by bandgap engineering. J Alloys Compd 788:1037–1047. https://doi.org/10.1016/J.JALLCOM.2019.02.28910.1016/J.JALLCOM.2019.02.289 ↗
54. Aryanto D, Marwoto P, Sudiro T, Wismogroho AS, Sugianto S (2019) Growth of a-axis-oriented Al-doped ZnO thin film on glass substrate using unbalanced DC magnetron sputtering. J Phys Conf Ser 1191(1):012031. https://doi.org/10.1088/1742-6596/1191/1/01203110.1088/1742-6596/1191/1/012031 ↗
55. Rana VS, Purohit LP, Sharma G, Singh SP, Sanjeev, Sharma K (2022) Effect of RF power on physical and electrical properties of Al-doped ZnO thin films. IJPAP 60:246–253
56. Abdallah B, Zetoun W, Tello A (2024) Deposition of ZnO thin films with different powers using RF magnetron sputtering method: structural, electrical and optical study. Heliyon 10(6):e27606. https://doi.org/10.1016/J.HELIYON.2024.E2760610.1016/J.HELIYON.2024.E27606 ↗
57. Oladijo OP, Sanjay MR, Collieus LL, Siengchin S, Moloisane L, Oladijo SS (2022) Effects of deposition time and RF power on the film characteristics of magnetron sputtered silicon carbide thin films. Mater Today Proc 52:2432–2438. https://doi.org/10.1016/J.MATPR.2021.10.42310.1016/J.MATPR.2021.10.423 ↗
58. Nguyen T et al (2020) Controlling electrical and optical properties of zinc oxide thin films grown by thermal atomic layer deposition with oxygen gas. Results Mater 6:100088. https://doi.org/10.1016/J.RINMA.2020.10008810.1016/J.RINMA.2020.100088 ↗
59. Rey G et al (2018) Absorption coefficient of a semiconductor thin film from photoluminescence. Phys Rev Appl 9(6):064008. https://doi.org/10.1103/PHYSREVAPPLIED.9.064008/FIGURES/5/MEDIUM10.1103/PHYSREVAPPLIED.9.064008/FIGURES/5/MEDIUM ↗
60. Chen H, Qu Y, Sun L, Peng J, Ding J (2019) Band structures and optical properties of Ag and Al co-doped ZnO by experimental and theoretic calculation. Phys E Low-dimensional Syst Nanostructures 114:113602. https://doi.org/10.1016/J.PHYSE.2019.11360210.1016/J.PHYSE.2019.113602 ↗
61. Kawano Y, Kodani Y, Chantana J, Minemoto T (2016) Effects of Na and secondary phases on physical properties of SnS thin film after sulfurization process. Jpn J Appl Phys 55(9):092301. https://doi.org/10.7567/JJAP.55.092301/XML10.7567/JJAP.55.092301/XML ↗
62. Saha D, Das AK, Ajimsha RS, Misra P, Kukreja LM (2013) Effect of disorder on carrier transport in ZnO thin films grown by atomic layer deposition at different temperatures. J Appl Phys 114(4):043703. https://doi.org/10.1063/1.4815941/37303910.1063/1.4815941/373039 ↗
63. Islam MR, Azam MG (2021) Enhanced photocatalytic activity of Mg-doped ZnO thin films prepared by sol–gel method. Surf Eng 37(6):775–783. https://doi.org/10.1080/02670844.2020.180114310.1080/02670844.2020.1801143 ↗
64. Tshabalala KG et al (2011) Luminescent properties and X-ray photoelectron spectroscopy study of ZnAl2O4:Ce3+, Tb3+ phosphor. J Alloys Compd 509(41):10115–10120. https://doi.org/10.1016/J.JALLCOM.2011.08.05410.1016/J.JALLCOM.2011.08.054 ↗
65. Iaiche S, Djelloul A (2015) ZnO/ZnAl2O4 nanocomposite films studied by X-Ray diffraction, FTIR, and X-Ray photoelectron spectroscopy. J Spectrosc 2015:836859. https://doi.org/10.1155/2015/83685910.1155/2015/836859 ↗
66. Zhang D et al (2018) Improvement of structural and optical properties of ZnAl2O4:Cr3+ ceramics with surface modification by using various concentrations of zinc acetate. J Sol-Gel Sci Technol 88(2):422–429. https://doi.org/10.1007/S10971-018-4820-X/METRICS10.1007/S10971-018-4820-X/METRICS ↗
67. Al-Gaashani R, Radiman S, Daud AR, Tabet N, Al-Douri Y (2013) XPS and optical studies of different morphologies of ZnO nanostructures prepared by microwave methods. Ceram Int 39(3):2283–2292. https://doi.org/10.1016/J.CERAMINT.2012.08.07510.1016/J.CERAMINT.2012.08.075 ↗
68. Yahmadi B, Kamoun O, Alhalaili B, Alleg S, Vidu R, Kamoun TN (2020) Physical investigations of (Co, Mn) Co-Doped ZnO nanocrystalline films. Nanomaterials 10(8):1507. https://doi.org/10.3390/NANO1008150710.3390/NANO10081507 ↗
69. Yao Y et al (2022) Enhanced photoluminescence and electrical properties of n-Al-Doped ZnO Nanorods/p-B-doped diamond heterojunction. Int J Mol Sci 23(7):3831. https://doi.org/10.3390/IJMS2307383110.3390/IJMS23073831 ↗
70. Liu Y, Zhu S (2019) Preparation and characterization of Mg, Al and Ga co-doped ZnO transparent conductive films deposited by magnetron sputtering. Results Phys 14:102514. https://doi.org/10.1016/J.RINP.2019.10251410.1016/J.RINP.2019.102514 ↗
71. Sim KU, Shin SW, Moholkar AV, Yun JH, Moon JH, Kim JH (2010) Effects of dopant (Al, Ga, and In) on the characteristics of ZnO thin films prepared by RF magnetron sputtering system. Curr Appl Phys 10(3):S463–S467. https://doi.org/10.1016/J.CAP.2010.02.02810.1016/J.CAP.2010.02.028 ↗
72. Mkawi EM, Ibrahim K, Ali MKM, Farrukh MA, Mohamed AS (2015) The effect of dopant concentration on properties of transparent conducting Al-doped ZnO thin films for efficient Cu2ZnSnS4 thin-film solar cells prepared by electrodeposition method. Appl Nanosci 5(8):993–1001. https://doi.org/10.1007/S13204-015-0400-3/FIGURES/810.1007/S13204-015-0400-3/FIGURES/8 ↗