Details

Autor(en) / Beteiligte

• Zhou, Yunfei
• Riehle, Frank S
• Yuan, Ying
• Schleiermacher, Hans-Frieder
• Niggemann, Michael
• Urban, Gerald A
• Krüger, Michael

Titel

Improved efficiency of hybrid solar cells based on non-ligand-exchanged CdSe quantum dots and poly(3-hexylthiophene)

Ist Teil von

• Applied physics letters, 2010-01, Vol.96 (1), p.013304-013304-3

Ort / Verlag

American Institute of Physics

Erscheinungsjahr

2010

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We report on bulk-heterojunction hybrid solar cells based on blends of non-ligand-exchanged CdSe quantum dots (QDs) and the conjugated polymer poly(3-hexylthiophene) with improved power conversion efficiencies of about 2% under AM1.5G illumination after spectral mismatch correction. This is the highest reported value for a spherical CdSe QD based photovoltaic device. After synthesis, the CdSe QDs are treated by a simple and fast acid-assisted washing procedure, which has been identified as a crucial factor in enhancing the device performance. A simple model of a reduced ligand sphere is proposed explaining the power conversion efficiency improvement.