| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 79480 | Solar Energy Materials and Solar Cells | 2012 | 5 Pages |
A high-efficiency inverted bulk heterojunction (BHJ) solar cell with good air stability is fabricated using annealing-free ZnO nanocrystals as an electron-transport layer and a blend of a low bandgap polymer PDTSTPD and PC71BM as an active layer. A power conversion efficiency as high as 6.7% has been achieved on the inverted devices with an active area of 1.0 cm2 using nitrobenzene as a processing additive. The device is highly stable, retaining 85% of its original efficiency after being stored in air for 32 days even without encapsulation.
Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A high-efficiency inverted BHJ solar cell is fabricated from a low bandgap polymer. ► Annealing-free ZnO nanocrystals are used as an electron-transport layer. ► An efficiency of 6.7% is achieved with nitrobenzene as a processing additive. ► 91% of the original efficiency is retained after being stored in air for two weeks.
