Journal
JOURNAL OF ELECTRONIC MATERIALS
Volume 46, Issue 1, Pages 306-311Publisher
SPRINGER
DOI: 10.1007/s11664-016-4956-9
Keywords
ITO; Ag; multilayer; transparent conducting electrode; organic solar cell
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Funding
- Korea Evaluation Institute of Industrial Technology (KEIT) [10049601]
- world class 300 project of the Small and Medium Business Administration (Korea) [S2317456]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10049601] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Korea Technology & Information Promotion Agency for SMEs (TIPA) [S2317456] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We investigated the optical and electrical properties of room-temperature-deposited indium-tin-oxide (ITO)/Ag (19 nm)/ITO multilayer films as a function of ITO layer thickness. The optical and electrical properties of the ITO/Ag/ITO films were compared with those of high-temperature-deposited ITO-only films for use as an anode in organic solar cells (OSCs). The ITO/Ag/ITO multilayer films had sheet resistances in the range 5.40-5.78 X/sq, while the ITO-only film showed 14.18 Omega/sq. The carrier concentration of the ITO/Ag/ITO films gradually decreased from 2.01 x 10(22) to 7.20 x 10(21) cm(-3) as the ITO thickness increased from 17 nm to 83 nm. At 530 nm, the transmittance of the ITO/Ag/ITO (50 nm/19 nm/50 nm) films was similar to 90%, while that of the ITO-only film gave 96.5%. The multilayer film had a smooth surface with a root mean square (RMS) roughness of 0.49 nm. Poly (3-hexylthiophene) (P3HT):[6,6]phenyl-C61 butyric acid methylester (PCBM) bulk heterojunction (BHJ)-based OSCs fabricated with the ITO/Ag/ITO (50 nm/19 nm/50 nm) film showed a power conversion efficiency (PCE) (2.84%) comparable to that of OSCs with a conventional ITO-only anode (3.48%).
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