TY - JOUR
T1 - The role of conducting-oxide-substrate type and morphology in TiO 2 films grown by microwave chemical bath deposition (MW-CBD) and their photovoltaic characteristics
AU - Vigil, Elena
AU - González, Bernardo
AU - Zumeta, Inti
AU - Docteur, Sergilus
AU - Peiró, Ana M.
AU - Gutiérrez-Tauste, David
AU - Domingo, Concepción
AU - Domènech, Xavier
AU - Ayllón, JoséA A.
N1 - Funding Information:
The authors wish to thank to CICYT (project PPQ2002-04060-C02-0) and AGAUR (E. Vigil's grant, PIV 2002) for financial support.
PY - 2004/2/15
Y1 - 2004/2/15
N2 - MW-CBD is a low-temperature deposition technique that gives transparent and well-adhered TiO2 thin films. TiO2 films on transparent conducting oxide are important for dye-sensitized solar cells, extremely thin absorber solar cells and for electrochromic devices. We study how the growth process of TiO2 films using MW-CBD is influenced by substrate type using SnO2:F and ITO substrates. Crystallinity of the films is mainly determined by the precursor solution rather than by the substrates studied, though morphology of the substrate influences the morphology of the films. Using the SnO2:F substrate more texturized TiO2 films grow. All films showed photovoltaic behavior. Current near short-circuit current in the I-V characteristic are within experimental uncertainty for films obtained on different substrate type but with the same precursor solution. Films obtained on SnO2:F with the precursor solution based on fluorine-complexed titanium(IV) exhibit the best results. In this case, open-circuit photovoltage increases appreciably.
AB - MW-CBD is a low-temperature deposition technique that gives transparent and well-adhered TiO2 thin films. TiO2 films on transparent conducting oxide are important for dye-sensitized solar cells, extremely thin absorber solar cells and for electrochromic devices. We study how the growth process of TiO2 films using MW-CBD is influenced by substrate type using SnO2:F and ITO substrates. Crystallinity of the films is mainly determined by the precursor solution rather than by the substrates studied, though morphology of the substrate influences the morphology of the films. Using the SnO2:F substrate more texturized TiO2 films grow. All films showed photovoltaic behavior. Current near short-circuit current in the I-V characteristic are within experimental uncertainty for films obtained on different substrate type but with the same precursor solution. Films obtained on SnO2:F with the precursor solution based on fluorine-complexed titanium(IV) exhibit the best results. In this case, open-circuit photovoltage increases appreciably.
KW - A2. Growth from solutions
KW - A3. Polycrystalline deposition
KW - B1. Nanomaterials
KW - B2. Semiconducting materials
KW - B3. Solar cells
UR - http://www.scopus.com/inward/record.url?scp=0842330004&partnerID=8YFLogxK
U2 - 10.1016/j.jcrysgro.2003.10.046
DO - 10.1016/j.jcrysgro.2003.10.046
M3 - Artículo
SN - 0022-0248
VL - 262
SP - 366
EP - 374
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1-4
ER -