Organic-Inorganic Eu3+/Tb3+ codoped hybrid films for temperature mapping in integrated circuits


The continuous decrease on the geometric size of electronic devices and integrated circuits generates higher local power densities and localized heating problems that cannot be characterized by conventional thermographic techniques. Here, a self-referencing intensity-based molecular thermometer involving a di-ureasil organic-inorganic hybrid thin film co-doped with Eu3+ and Tb3+ tris (3-diketonate) chelates is used to obtain the temperature map of a FR4 printed wiring board with spatio-temporal resolutions of 0.42 mu m/4.8 ms.

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Brites, CDS; Lima, PP; Silva, NJO; Millan, A; Amaral, VS; Palacio, F; Carlos, LD

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We acknowledge Fundacao para a Ciencia e a Tecnologia (FCT, Portugal), COMPETE and FEDER programs (Pest-C/CTM/LA0011/2011, PTDC/CTM/101324/2008, RECI/CTM-CER/0336/2012) and Integrated Spanish-Portuguese Action PT2009-0131 for financial support. The work in Zaragoza has been supported by the grants MAT2011-25991 and CONSOLIDER CSD2007-00010 from the Ministry of Economy and Competitivity. Carlos D. S. Brites (SFRH/BPD/89003/2012) and Patricia P. Lima (SFRH/BPD/34365/2006) thank FCT for grants. Nuno J. O. Silva acknowledges FCT for Ciencia 2008 program.

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