Fabrication of Hybrid Photovoltaic Cell Using Atomic Layer Deposited TiO₂ Thin Film on CuPc Layer

Authors: Yun, Je-Jung; Lim, Gyeong-Teak; Kim, Do-Heyoung; Lee, Jae-Kee; Shin, Jae-Soon; Han, Eun-Mi

Source: Journal of Biomedical Nanotechnology, Volume 2, Number 2, August 2006 , pp. 161-164(4)

Publisher: American Scientific Publishers

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Abstract:

In this work, light-to-current conversion efficiency of a solar cell having the device structure of indium tin oxide (ITO) anode/copper phthalocyanine (CuPc, 50 nm)/titanium dioxide (TiO₂) (80 nm)/aluminum (Al) (150 nm) electrode is reported. The TiO₂ layer was fabricated by atomic layer deposition (ALD) method onto the CuPc layer. The light-to-current conversion efficiency of the photovoltaic (PV) cell was found to be 3.7 × 10⁻⁴% with the fill factor 0.14. The analysis of atomic force microscopy (AFM) and alternative current (A.C) impedance suggest that the enhancement of the light-to-current conversion efficiency is raised from the lower value of charge transfer resistance of the cell. Under the standard air mass (AM) 1.5 condition of 20 mW/cm² irradiation intensity, the open circuit voltage (V_oc), short circuit current (J_sc), maximum power voltage (V_mp), and maximum power current (J_mp) of the PV device were 0.64 V, 0.83 μA/cm², 0.2 V, and 0.38 μA/cm², respectively.

Keywords: ATOMIC LAYER DEPOSITION (ALD); ATOMIC FORCE MICROSCOPY (AFM); ALTERNATIVE CURRENT (A.C) IMPEDANCE; COPPER PHTHALOCYANINE (CUPC); HYBRID; PHOTOVOLTAIC

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jbn.2006.029

Publication date: 2006-08-01

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Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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