Abstract
Cu-doped ZnO (ZnO:Cu) thin films and ZnO/ZnO:Cu homojunction devices were electrodeposited on conductive glass substrates in a non-aqueous electrolyte containing Cu and Zn salts. The Cu content of the films is proportional to the Cu/Zn precursor ratio in the deposition electrolyte. ZnO:Cu was found to be of a hexagonal wurtzite structure with (002) preferred orientation. A transition from n-type to p-type was observed for ZnO:Cu films with a Cu/Zn ratio higher than 2% as inferred from the change in the direction of the photocurrent. The rectifying characteristics shown by homojunction devices further confirm the p-type conductivity of ZnO:Cu layers.
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References
Klingshirn C (2007) Phys Status Solidi B 244:3027–3073
Lyons JL, Janotti A, Van de Walle CG (2009) Appl Phys Lett 95:252105–252107
Zunger A (2008) Appl Phys Lett 83:1830–1832
Park CH, Zhang SB, Wie S (2002) Phys Rev B 66:073202–073204
Yan Y, Al-Jassim MM, Wie S (2006) Appl Phys Lett 89:181912–181914
Park MS, Min BI (2003) Phys Rev B 68:224436–224441
Shukla G (2009) Appl Phys A 97:115–118
Buchholz DB, Chang RPH, Song JH, Ketterson JB (2005) Appl Phys Lett 87:82504–82506
Rahmani MB, Keshmiri SH, Shafiei M, Latham K, Wlodarski W, du Plessis J, Kalantar-Zadeh K (2009) Sensor Letters 7:621–628
Lincot D (2005) Thin Solid Films 487:40–48
Tortosa M, Mollar M, Marí B (2007) J Crystal Growth 304:97–102
Tortosa M, Mollar M, Marí B, Lloret F (2008) J Appl Phys 104:033910–033914
Mollar M, Tortosa M, Casasús R, Marí B (2009) Microelectronics J 40:276–279
Marí B, Elmanouni A, Damonte L, Mollar M (2010) Phys Status Solidi A 207:1623–1626
Cembrero J, Busquets-Mataix D (2008) Thin Solid Films 517:2859–2864
Marí B, Cembrero J, Mollar M, Tortosa M (2008) Phys Status Solidi C 5:555–558
Fisicaro P, Adriaens A, Ferrara E, Prenesti E (2007) Anal Chim Acta 597:75–81
Manjón FJ, Marí B, Serrano BJ, Romero AH (2005) J Appl Phys 97:053516–053519
Rajeshawar K (2001) Fundamentals of semiconductor electrochemistry and photoelectrochemistry. In: Licht S (ed) Encyclopedia of electrochemistry. Wiley-VCH, Weinheim, pp 38–39
Zoski CG (2007) Handbook of electrochemistry. Elsevier, Amsterdam, pp 336–358
Acknowledgements
This work was supported by the Spanish Government through MEC grant MAT2009-14625-C03-03 and the Portuguese Foundation for Science and Technology (FCT), CIENCIA 2007. Financial support by the European Commission through NanoCIS project (PIRSESGA-2010-269279) is gratefully acknowledged.
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Marí, B., Sahal, M., Mollar, M.A. et al. p-Type behaviour of electrodeposited ZnO:Cu films. J Solid State Electrochem 16, 2261–2265 (2012). https://doi.org/10.1007/s10008-011-1635-x
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DOI: https://doi.org/10.1007/s10008-011-1635-x