Effects of postannealing process on the properties of RuO2 films and their performance as electrodes in organic thin film transistors or solar cells.
RuO(2) films were deposited on SiO(2) (300 nm)/N++Si substrates using radio frequency magnetron sputtering at room temperature. As-deposited RuO(2) films were annealed at different temperatures (100, 300, and 500 °C) and ambients (Ar, O(2) and vacuum), and the resulting effects on the electrical and physical properties of RuO(2) films were characterized. The effect of annealing atmosphere was negligible, however the temperature highly influenced the resistivity and crystallinity of RuO(2) films. RuO(2) films annealed at high temperature exhibited lower resistivity and higher crystallinity than as-deposited RuO(2). To investigate the possibility to use RuO(2) film as alternative electrodes in flexible devices, as-deposited and annealed RuO(2) films were applied as the source/drain (S/D) electrodes in organic thin film transistor (OTFT), catalytic electrodes in dye sensitized solar cell (DSSC) and as the hole-injection buffer layer (HIL) in organic photovoltaic (OPV). Except for OTFTs (μ ≈ 0.45 cm(2)/(V s) and on/off ratio ≈ 5× 10(5)) with RuO(2) S/D electrodes, the DSSC and OPV (3.5% and 2.56%) incorporating annealed RuO(2) electrodes showed higher performance than those with as-deposited RuO(2) electrodes (3.0% and 1.61%, respectively).
Samsung Advanced Institute of Technology, Suwon 440-600, Republic of Korea. DongJin.Yun@samsung.com
Dong-Jin
DJ
Yun
Hye-min
HM
Ra
Sae Byeok
SB
Jo
Wanjoo
W
Maeng
Seung-hyup
SH
Lee
Sunghoon
S
Park
Ji-Wook
JW
Jang
Kilwon
K
Cho
Shi-Woo
SW
Rhee
D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry; D004566:Electrodes; D017975:Ruthenium Compounds / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry; D012993:Solar Energy; D013696:Temperature; D014173:Transistors, Electronic
D004396:Coloring Agents; D017975:Ruthenium Compounds; C029017:ruthenium dioxide; D012822:Silicon Dioxide