Properties of Vanadium-Doped Indium Oxide Deposited at Room Temperature as Transparent Conductor for Inverted Polymer Solar Cells

• Published in: Journal of electronic materials 2017-10, Vol.46 (10), p.5797-5803
• Main Authors: Choi, Min-Jun, Lim, Keun Yong, Park, Hyun-Woo, Kim, Han-Ki, Hwang, Do Kyung, Lim, Sung-Jin, Shim, Jae Won, Chung, Kwun-Bum
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Conduction bands; Conductors; Doping; Electronics and Microelectronics; Energy conversion efficiency; Fermi level; Figure of merit; Indium; Instrumentation; Materials Science; Maximum power; Optical and Electronic Materials; Photovoltaic cells; Polymers; Properties (attributes); Room temperature; Solar cells; Solid State Physics; Vanadium
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-017-5605-7

The properties of vanadium-doped indium oxide (IVO) deposited at room temperature as a transparent conductor for inverted polymer solar cells have been investigated as a function of the vanadium doping concentration. IVO film prepared with V doping concentration of 0.03% showed optimal properties for use as a transparent conductor with figure of merit of 4.35 × 10 −3  Ohm −1 , related to altered band alignment between the Fermi level and conduction-band minimum. In the optimal optoelectrical conditions for the IVO film, performance optimization of PTB7:PC 70 BM inverted polymer solar cells resulted in maximum power conversion efficiency of 4.7 ± 0.4% under simulated air mass 1.5 global illumination at 100 mW/cm 2 .