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http://hdl.handle.net/1942/11147
Title: | Charge Transfer State Versus Hot Exciton Dissociation in Polymer-Fullerene Blended Solar Cells | Authors: | Lee, Jiye VANDEWAL, Koen Yost, Shane R. Bahlke, Matthias E. GORIS, Ludwig Baldo, Marc A. MANCA, Jean Van Voorhis, Troy |
Issue Date: | 2010 | Publisher: | AMER CHEMICAL SOC | Source: | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 132(34). p. 11878-11880 | Abstract: | We examine the significance of hot exciton dissociation in two archetypical polymer fullerene blend solar cells. Rather than evolving through a bound charge transfer state, hot processes are proposed to convert excitons directly into free charges. But we find that the internal quantum yields of carrier photogeneration are similar for both excitons and direct excitation of charge transfer states. The internal quantum yield, together with the temperature dependence of the current voltage characteristics, is consistent with negligible impact from hot exciton dissociation. | Notes: | [Lee, Jiye; Bahlke, Matthias E.; Baldo, Marc A.] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA. [Vandewal, Koen; Goris, Ludwig; Manca, Jean V.] Hasselt Univ, IMEC IMOMEC, Vzw, B-3590 Diepenbeek, Belgium. [Vandewal, Koen; Goris, Ludwig; Manca, Jean V.] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Yost, Shane R.; Van Voorhis, Troy] MIT, Dept Chem, Cambridge, MA 02139 USA. baldo@mit.edu; jean.manca@uhasselt.be; tvan@mit.edu | Document URI: | http://hdl.handle.net/1942/11147 | ISSN: | 0002-7863 | e-ISSN: | 1520-5126 | DOI: | 10.1021/ja1045742 | ISI #: | 000281296700021 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2011 |
Appears in Collections: | Research publications |
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