| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 78867 | Solar Energy Materials and Solar Cells | 2011 | 5 Pages |
We report the performance improvement of organic solar cell by addition of an n-type chemical doping layer in organic bulk heterojunction device. The power conversion efficiency (PCE) of P3HT and PCBM-71 based polymer solar cells increases by adding a mixture of TCNQ (7,7,8,8-tetracyanoquinodimethane) and LCV (Leucocrystal violet) between active layer and cathode electrode. The PCE of the cell increases by 14% compared to the control cell with Al-only cathode electrode. The device with an organic n-doped layer shows the JSC of 8.88 mA/cm2, VOC of 0.51 V, FF of 60.1%, and thus the PCE of 2.72% under AM1.5 illumination of 100 mW/cm2.
Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► n-type chemical doping layer by solution process was incorporated in organic bulk heterojunction solar cell. ► The energy barrier at Al cathode interface was reduced by using a TCNQ:LCV chemical doping layer. ► The work function of Al cathode was reduced by 0.4 eV by inserting a n-doped layer. ► The PCE increased by 14% compared to the control device without a n-type doping layer.
