(B. MIPA/Sains) Investigation of Transport Mechanism in Spirulina sp thin Films Deposited by Spin Coating to Improve The Efficiency of Generation-4 Organic Solar Cell.
(B. MIPA/Sains)
Investigation of Transport Mechanism in Spirulina sp thin Films Deposited by Spin Coating to
Improve The Efficiency of Generation-4 Organic Solar Cell
Key word: thin films of spirulina sp, spin coating, carrier charge, energy gap
Utari; Purnama, Budi; Wibowo, Atmanto Heru
Fakultas MIPA UNS, Penelitian, DP2M Dikti, Penelitian Unggulan Perguruan Tinggi, 2012
Investigation of transport mechanism in spirulina sp thin films deposited by spin coating methods results
have successfully carried out. The thin films were grown on the PCB with a certain pattern. In this
experiment, two important experiments confirmed that the modification of the energy gap with changes
in rotational speed and increasing the number of layers. The changed of the energy gap can be resoned
surface modification of the spirulina sp thin films which was clarified by using scanning tunneling
microscopy (STM).
Confirmation of the number of layers dependence of the energy gap indicated that energy gap decreases
linearly with increasing the number of layers. In addition, absorbance value of the samples also increases
with the rise of the number layers. When assuming an increase in the number layers also increases the
number of charge carriers, these results indicate that the HOMO-LUMO become closer or even overlap
each other. Increasing the number layers of N = 1 to N = 7, the energy gap decrease from 1.86 eV to be
1.44 eV.
While confirmation of the energy gap variation with rotational speed affirm specific dependency. At first,
the energy gap increases with increasing angular velocity up to a certain critical velocity is = 4000 rpm,
after which it remained constant in the energy gap Eg = 1.42 eV. Clarification of changes in the structure
of the surface morphology by scanning tunneling microscopy shows that the change of morphological
structure of a thin continuous layer into discrete thin layers.
Evaluation of the photon energy is transferred into electrical energy through the absorption peak
wavelength confirms sensitizing phenomenon is determined by the photon transfer efficiency. However
it is dealing with changes in the energy gap due to overlapping HOMO-LUMO and morphological changes
in the surface film. Based on this understanding of the structural configuration of thin films typically
determine the efficiency of the transfer of photon energy into electrical energy.
Investigation of Transport Mechanism in Spirulina sp thin Films Deposited by Spin Coating to
Improve The Efficiency of Generation-4 Organic Solar Cell
Key word: thin films of spirulina sp, spin coating, carrier charge, energy gap
Utari; Purnama, Budi; Wibowo, Atmanto Heru
Fakultas MIPA UNS, Penelitian, DP2M Dikti, Penelitian Unggulan Perguruan Tinggi, 2012
Investigation of transport mechanism in spirulina sp thin films deposited by spin coating methods results
have successfully carried out. The thin films were grown on the PCB with a certain pattern. In this
experiment, two important experiments confirmed that the modification of the energy gap with changes
in rotational speed and increasing the number of layers. The changed of the energy gap can be resoned
surface modification of the spirulina sp thin films which was clarified by using scanning tunneling
microscopy (STM).
Confirmation of the number of layers dependence of the energy gap indicated that energy gap decreases
linearly with increasing the number of layers. In addition, absorbance value of the samples also increases
with the rise of the number layers. When assuming an increase in the number layers also increases the
number of charge carriers, these results indicate that the HOMO-LUMO become closer or even overlap
each other. Increasing the number layers of N = 1 to N = 7, the energy gap decrease from 1.86 eV to be
1.44 eV.
While confirmation of the energy gap variation with rotational speed affirm specific dependency. At first,
the energy gap increases with increasing angular velocity up to a certain critical velocity is = 4000 rpm,
after which it remained constant in the energy gap Eg = 1.42 eV. Clarification of changes in the structure
of the surface morphology by scanning tunneling microscopy shows that the change of morphological
structure of a thin continuous layer into discrete thin layers.
Evaluation of the photon energy is transferred into electrical energy through the absorption peak
wavelength confirms sensitizing phenomenon is determined by the photon transfer efficiency. However
it is dealing with changes in the energy gap due to overlapping HOMO-LUMO and morphological changes
in the surface film. Based on this understanding of the structural configuration of thin films typically
determine the efficiency of the transfer of photon energy into electrical energy.