Fermi energy level tuning for dye sensitized solar cells using nitrogen-doped carbon nanotubes

What is it about?

We used the sp2 nitrogen-doped carbon nanotubes (N(sp2)-CNTs) introduced into the mesoporous TiO2 layer for a new route to allow enhanced photocurrent density without loss of the open circuit voltage (Voc) which should be decreased on pristine CNT channels.

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Why is it important?

It is noted that the tuning of Fermi level of TiO2 photoelectrode by the extended N-doped carbon nanotubes provides effective channels to allow the express photoelectron transport while minimizing the open circuit voltage decay, which was intrinsically incapable of being overcome by using the extended pristine carbon nanotubes.