A quantitative model for charge carrier transport, trapping and recombination in nanocrystal-based solar cells
| LEADER | caa a22 4500 | ||
|---|---|---|---|
| 001 | 52878577X | ||
| 005 | 20190713030955.0 | ||
| 007 | cr unu---uuuuu | ||
| 008 | 180924s2015 xx s 000 0 eng | ||
| 024 | 7 | 0 | |a 10.3929/ethz-b-000098798 |2 doi |
| 024 | 7 | 0 | |a 10.1038/ncomms7180 |2 doi |
| 035 | |a (ETHRESEARCH)oai:www.research-collecti.ethz.ch:20.500.11850/98798 | ||
| 245 | 0 | 2 | |a A quantitative model for charge carrier transport, trapping and recombination in nanocrystal-based solar cells |h [Elektronische Daten] |c [Deniz Bozyigit, Weyde; id_orcid 0000-0002-7572-499X Lin, Nuri; id_orcid 0000-0001-6593-7601 Yazdani, Olesya; id_orcid 0000-0002-1653-1338 Yarema, Vanessa; id_orcid 0000-0001-6435-0227 Wood] |
| 246 | 0 | |a Nat Commun | |
| 506 | |a Open access |2 ethresearch | ||
| 520 | 3 | |a Improving devices incorporating solution-processed nanocrystal-based semiconductors requires a better understanding of charge transport in these complex, inorganic-organic materials. Here we perform a systematic study on PbS nanocrystal-based diodes using temperature-dependent current-voltage characterization and thermal admittance spectroscopy to develop a model for charge transport that is applicable to different nanocrystal-solids and device architectures. Our analysis confirms that charge transport occurs in states that derive from the quantum-confined electronic levels of the individual nanocrystals and is governed by diffusion-controlled trap-assisted recombination. The current is limited not by the Schottky effect, but by Fermi-level pinning because of trap states that is independent of the electrode-nanocrystal interface. Our model successfully explains the non-trivial trends in charge transport as a function of nanocrystal size and the origins of the trade-offs facing the optimization of nanocrystal-based solar cells. We use the insights from our charge transport model to formulate design guidelines for engineering higher-performance nanocrystal-based devices. | |
| 540 | |a Creative Commons Attribution 4.0 International |u http://creativecommons.org/licenses/by/4.0 |2 ethresearch | ||
| 700 | 1 | |a Bozyigit |D Deniz |e joint author | |
| 700 | 1 | |a Lin |D Weyde; id_orcid 0000-0002-7572-499X |e joint author | |
| 700 | 1 | |a Yazdani |D Nuri; id_orcid 0000-0001-6593-7601 |e joint author | |
| 700 | 1 | |a Yarema |D Olesya; id_orcid 0000-0002-1653-1338 |e joint author | |
| 700 | 1 | |a Wood |D Vanessa; id_orcid 0000-0001-6435-0227 |e joint author | |
| 773 | 0 | |t Nature Communications |d London : Nature Publishing Group |g 6, p. 6180 |x 2041-1723 | |
| 856 | 4 | 0 | |u http://hdl.handle.net/20.500.11850/98798 |q text/html |z WWW-Backlink auf das Repository (Open access) |
| 908 | |D 1 |a Journal Article |2 ethresearch | ||
| 950 | |B ETHRESEARCH |P 856 |E 40 |u http://hdl.handle.net/20.500.11850/98798 |q text/html |z WWW-Backlink auf das Repository (Open access) | ||
| 950 | |B ETHRESEARCH |P 700 |E 1- |a Bozyigit |D Deniz |e joint author | ||
| 950 | |B ETHRESEARCH |P 700 |E 1- |a Lin |D Weyde; id_orcid 0000-0002-7572-499X |e joint author | ||
| 950 | |B ETHRESEARCH |P 700 |E 1- |a Yazdani |D Nuri; id_orcid 0000-0001-6593-7601 |e joint author | ||
| 950 | |B ETHRESEARCH |P 700 |E 1- |a Yarema |D Olesya; id_orcid 0000-0002-1653-1338 |e joint author | ||
| 950 | |B ETHRESEARCH |P 700 |E 1- |a Wood |D Vanessa; id_orcid 0000-0001-6435-0227 |e joint author | ||
| 950 | |B ETHRESEARCH |P 773 |E 0- |t Nature Communications |d London : Nature Publishing Group |g 6, p. 6180 |x 2041-1723 | ||
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 949 | |B ETHRESEARCH |F ETHRESEARCH |b ETHRESEARCH |j Journal Article |c Open access | ||