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Coatings 2016, 6(4), 71; doi:10.3390/coatings6040071

Local Electrical Response in Alkaline-Doped Electrodeposited CuInSe2/Cu Films

1
Instituto Politécnico Nacional, Materiales y Tecnologías para Energía, Salud y Medioambiente (GESMAT), CICATA Altamira. Km.14.5 Carretera Tampico-Puerto Industrial, 89600 Altamira, Mexico
2
Facultad de Física, Universidad de La Habana, San Lázaro y L, Vedado, 10400 La Habana, Cuba
3
División de Estudios de Posgrado e Investigación, Instituto Tecnológico de Cd. Madero, Los Mangos, 89460 Cd. Madero Tamaulipas, Mexico
4
Instituto Politécnico Nacional, CICATA Legaria. Calzada Legaria 396 Col. Irrigación, 11500 CdMx, Mexico
5
CONACYT-Instituto Politécnico Nacional, GESMAT-CICATA Altamira 89600, Mexico
*
Author to whom correspondence should be addressed.
Academic Editors: Eva Pellicer and Jordi Sort
Received: 13 October 2016 / Revised: 13 December 2016 / Accepted: 14 December 2016 / Published: 20 December 2016
(This article belongs to the Special Issue Thin Films and Patterned Structures by Electrochemical Methods)
View Full-Text   |   Download PDF [3840 KB, uploaded 20 December 2016]   |  

Abstract

The local electrical response in alkaline-doped CuInSe2 films prepared by single-step electrodeposition onto Cu substrates was studied by current-sensing atomic force microscopy. The CuInSe2 (CIS) films were prepared from single baths containing the dopant ions (Li, Na, K or Cs) and were studied by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and photocurrent response. Increased crystallinity and surface texturing as the ion size increased were observed, as well as an enhanced photocurrent response in Cs-doped CIS. Li- and Na-doped films had larger conductivity than the undoped film while the K- and Cs-doped samples displayed shorter currents and the current images indicated strong charge accumulation in the K- and Cs-doped films, forming surface capacitors. Corrected current-sensing AFM IV curves were adjusted with the Shockley equation. View Full-Text
Keywords: CuInSe2 electrodeposition; alkaline doping; current sensing atomic force microscopy CuInSe2 electrodeposition; alkaline doping; current sensing atomic force microscopy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Barón-Miranda, J.A.; Calzadilla, O.; Arvizu-Rodríguez, L.E.; Fernández-Muñoz, J.L.; Guarneros-Aguilar, C.; Chale-Lara, F.; Páramo-García, U.; Caballero-Briones, F. Local Electrical Response in Alkaline-Doped Electrodeposited CuInSe2/Cu Films. Coatings 2016, 6, 71.

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