Influence of oxygen on Ag ionization in molten lead borosilicate glass during screen-printed Ag contact formation for Si solar cells

Autor:	Kuninori Okamoto, Joo Youl Huh, Young Sik Kim, Sung Bin Cho, Bo Mook Chung, Jung Woo Chun
Rok vydání:	2013
Předmět:	Materials science Borosilicate glass General Chemical Engineering Metallurgy Analytical chemistry chemistry.chemical_element Partial pressure Chronoamperometry Oxygen Ion chemistry Ionization Electrochemistry Solubility Dissolution
Zdroj:	Electrochimica Acta. 106:333-341
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2013.05.109
Popis:	a b s t r a c t In order to gain further insight into the formation mechanism of fire-through Ag contacts of Si solar cells, the ionization of Ag during the dissolution of Ag powder into a lead borosilicate glass melt was electrochemically investigated at 800 ◦ C under various ambient conditions with different oxygen partial pressures (PO2 ). Voltammetric analyses of the Ag-free and Ag-containing glass melts confirmed that some of the Ag powder dissolved into the molten glass as Ag + ions through interaction of the powder with oxygen in the ambient atmosphere. The concentration of Ag+ in the molten glass significantly increased with increasing PO2 . The dependence of the Ag + solubility in the molten glass on PO2 was estimated from chronoamperometric measurements for a series of glass melts containing different amounts of Ag powder. The chronoamperometry results clearly demonstrated that the solubility limit of Ag + in the
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba1a591f68dd2fac99c49c25f0d236a7 https://doi.org/10.1016/j.electacta.2013.05.109 Zobrazit plný text záznamu Full Text from ScienceDirect