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J. Korean Ceram. Soc. > Volume 51(3); 2014 > Article
Journal of the Korean Ceramic Society 2014;51(3): 170.
doi: https://doi.org/10.4191/kcers.2014.51.3.170
V2O5 및 TeO2 함유 유리를 이용한 염료감응형 태양전지 패널의 레이저 봉착
조성진, 이경호
순천향대학교 디스플레이신소재공학과
Laser Sealing of Dye-Sensitized Solar Cell Panels Using V2O5 and TeO2 Contained Glass
Sung Jin Cho, Kyoung Ho Lee
Department of Display Materials Engineering, Soonchunhayng University
ABSTRACT
Effective glass frit compositions enabled to absorb laser energy, and to seal a commercial dye-sensitized solar-cell-panel substrate were developed by using $V_2O_5$-based glasses with various amounts of $TeO_2$ substitution. The latter was intended to increase the lifetime of the solar cells. Substitution of $V_2O_5$ by $TeO_2$ provided a strong network structure for the glasses via the formation of tetrahedral pyramids in the glass, and changed the various glass properties, such as glass transition temperature ($T_g$), dilatometric softening point ($T_d$), crystallization temperature, coefficient of thermal expansion (CTE), and glass flowage without any detrimental effect on the laser absorption property of the glasses. The thermal expansion mismatch (${Delta}{alpha}$) between the glass frit and the substrate could be controlled within less than ${pm}5%$ by addition of 10 wt% of ${beta}$-eucryptite. An 810 nm diode laser was used for the sealing test. The laser sealing test revealed that the VZBT20 glass frit with 10 wt% ${beta}$-eucryptite was successfully sealed the substrates without interfacial cracks and pores. The optimum sealing conditions were provided by a beam size of 3 mm, laser power of 40 watt, scan speed of 300 mm/s, and 200 irradiation cycles.
Key words: Laser sealing, Dye-sensitized solar cell, $V_2O_5$-based glass frit, $TeO_2$ substitution
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