The novel organic photovoltaic cell using inter-layer for hole-electron separation

We investigated organic photovoltaic (OPV) cells using hole-electron separation interlayer for improving conversion efficiency. The novel structure of OPV cell was composed of ITO / PEDOT:PSS / DPASN / P3HT:PC
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BM / Liq / Al. OPV device inserting DPASN has 2.28% of energy conversion efficiency higher than 1.99 % of conventional OPV cell. DPASN layer effected on blocking electron transfer to anode electrode by their LUMO and HOMO energy levels of DPASN whereas DPASN mixing layer with P3HT:PC
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BM restricted holes and electrons separation in the active layer when light absorption occurred due to changing Voc.