Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Technical Tasks and Development Current Status of Organic Solar Cells

유기 태양전지의 개발 현황과 기술 과제

  • Jang, Ji Geun (Department of Electronics and Electrical Engineering, Dankook University) ;
  • Park, Byung Min (Department of Electronics and Electrical Engineering, Dankook University) ;
  • Lim, Sungkyoo (Department of Electronics and Electrical Engineering, Dankook University) ;
  • Chang, Ho Jung (Department of Electronics and Electrical Engineering, Dankook University)
  • 장지근 (단국대학교 전자전기공학과) ;
  • 박병민 (단국대학교 전자전기공학과) ;
  • 임성규 (단국대학교 전자전기공학과) ;
  • 장호정 (단국대학교 전자전기공학과)
  • Received : 2014.05.07
  • Accepted : 2014.07.25
  • Published : 2014.08.27
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Abstract

Serious environmental problems have been caused by the greenhouse effect due to carbon dioxide($CO_2$) or nitrogen oxides($NO_x$) generated by the use of fossil fuels, including oil and liquefied natural gas. Many countries, including our own, the United States, those of the European Union and other developed countries around the world; have shown growing interest in clean energy, and have been concentrating on the development of new energy-saving materials and devices. Typical non-fossil-fuel sources include solar cells, wind power, tidal power, nuclear power, and fuel cells. In particular, organic solar cells(OSCs) have relatively low power-conversion efficiency(PCE) in comparison with inorganic(silicon) based solar cells, compound semiconductor solar cells and the CIGS [$Cu(In_{1-x}Ga_x)Se_2$] thin film solar cells. Recently, organic cell efficiencies greater than 10 % have been obtained by means of the development of new organic semiconducting materials, which feature improvements in crystalline properties, as well as in the quantum-dot nano-structure of the active layers. In this paper, a brief overview of solar cells in general is presented. In particular, the current development status of the next-generation OSCs including their operation principle, device-manufacturing processes, and improvements in the PCE are described.

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