Local electrical response in alkaline-doped electrodeposited CuInSe <inf>2</inf> /cu films

Javier A. Barón-Miranda, Octavio Calzadilla, Liliana E. Arvizu-Rodríguez, Jose L. Fernández-Muñoz, Cesia Guarneros-Aguilar, Fabio Chale-Lara, Ulises Páramo-García, Felipe Caballero-Briones

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© 2016 by the authors. The local electrical response in alkaline-doped CuInSe 2 films prepared by single-step electrodeposition onto Cu substrates was studied by current-sensing atomic force microscopy. The CuInSe 2 (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 Kand Cs-doped films, forming surface capacitors. Corrected current-sensing AFM IV curves were adjusted with the Shockley equation.
Idioma originalInglés estadounidense
EstadoPublicada - 1 dic 2016

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