[23p-B103-1~13] 12.5 Organic solar cells

▲ [23p-B103-8] Doped Lateral Organic Solar Cells

〇(D)Jaseela Palasheriithikkal^1,2, Seiichiro Izawa^1,2, Masahiro Hiramoto^1,2 (1.Institute for Molecular Science, 2.The graduate university for advanced studies, SOKENDAI)

Keywords:Doped organic lateral solar cells

Doping effects on organic lateral photovoltaic cells with separated carrier-generating (DBP/C60) and doped carrier-transporting (C8-BTBT and PTCDI-C8) layers were investigated. A doping concentration of 100 ppm into the lateral hole and electron transporting layers doubled the photocurrent density by forming a built-in potential between the layers in the vertical direction of the lateral cell, which accelerated carrier generation. A higher doping concentration induced trap-assisted recombination at direct C8-BTBT/PTCDI-C8 contact points and caused a decrease in photocurrent density.