Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 4757-4765 |
| Seitenumfang | 9 |
| Fachzeitschrift | Langmuir |
| Jahrgang | 36 |
| Ausgabenummer | 17 |
| Publikationsstatus | Veröffentlicht - 3 März 2020 |
Abstract
The mobility of charge carriers across a semiconductor-nanoparticle-based 3D network (i.e., a gel) and the interfacial transfer of the charge carriers across the nanoparticle network/electrolyte boundary are elementary processes for applications in the fields of sensing and energy harvesting. The automated manufacturing of electrodes coated with porous networks can be realized by inkjet printing. By simultaneous printing of CdSe/CdS dot-in-rod-shaped nanorods (NRs) and the destabilization reagent, CdSe/CdS gel-network-coated electrodes can be obtained. In this work, the charge carrier mobility of the electrons and the holes within the porous CdSe/CdS nanorod gel network is investigated via photoelectrochemistry. Using linear sweep voltammograms (LSVs) and intensity-modulated photocurrent spectroscopy (IMPS), it is shown that the electron is moving within the tip-to-tip-connected CdSe/CdS NR gel structure, while the holes are trapped in the CdSe seed of the semiconductor heterostructures. Furthermore, the preparation process of gel structures is related to the elementary mechanism of hydration, which can be shown via photoelectrochemical long-term studies.
ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Werkstoffwissenschaften (insg.)
- Chemie (insg.)
- Spektroskopie
- Physik und Astronomie (insg.)
- Oberflächen und Grenzflächen
- Chemie (insg.)
- Elektrochemie
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in: Langmuir, Jahrgang 36, Nr. 17, 03.03.2020, S. 4757-4765.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Revealing the correlation of the electrochemical properties and the hydration of inkjet printed CdSe/CdS semiconductor gels
AU - Miethe, Jan F
AU - Luebkemann, Franziska
AU - Schlosser, Anja
AU - Dorfs, Dirk
AU - Bigall, Nadja C
N1 - Funding information: The authors are grateful for financial support from the German Federal Ministry of Education and Research (BMBF) within the framework of the program NanoMatFutur, support code 03X5525, and the European Research Council (European Union’s Horizon 2020 research and innovation program, grant agreement 714429). Furthermore, the authors would like to acknowledge the Laboratory of Nano and Quantum Engineering (LNQE) at the Leibniz Universität Hannover for support. D.D. and F.L. thank the Volkswagen Foundation (Lower Saxony/Israel cooperation, Grant ZN2916), and D.D. thanks the DFG (research grant 1580/5-1). N.C.B. wants to thank the DFG (research grant BI 1708/4-1) for funding. A.S. thanks the Hannover School for Nanotechnology (hsn) for funding. The project has in part been funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy within the Cluster of Excellence PhoenixD (EXC 2122, Project ID 390833453). The authors furthermore acknowledge Armin Feldhoff as well as Jürgen Caro for providing the SEM facilities. In addition, we would like to thank P. Mühr, M. Köhler, J. Kuckuck, and W. Becker for their valuable help in realizing the electrochemical setup.
PY - 2020/3/3
Y1 - 2020/3/3
N2 - The mobility of charge carriers across a semiconductor-nanoparticle-based 3D network (i.e., a gel) and the interfacial transfer of the charge carriers across the nanoparticle network/electrolyte boundary are elementary processes for applications in the fields of sensing and energy harvesting. The automated manufacturing of electrodes coated with porous networks can be realized by inkjet printing. By simultaneous printing of CdSe/CdS dot-in-rod-shaped nanorods (NRs) and the destabilization reagent, CdSe/CdS gel-network-coated electrodes can be obtained. In this work, the charge carrier mobility of the electrons and the holes within the porous CdSe/CdS nanorod gel network is investigated via photoelectrochemistry. Using linear sweep voltammograms (LSVs) and intensity-modulated photocurrent spectroscopy (IMPS), it is shown that the electron is moving within the tip-to-tip-connected CdSe/CdS NR gel structure, while the holes are trapped in the CdSe seed of the semiconductor heterostructures. Furthermore, the preparation process of gel structures is related to the elementary mechanism of hydration, which can be shown via photoelectrochemical long-term studies.
AB - The mobility of charge carriers across a semiconductor-nanoparticle-based 3D network (i.e., a gel) and the interfacial transfer of the charge carriers across the nanoparticle network/electrolyte boundary are elementary processes for applications in the fields of sensing and energy harvesting. The automated manufacturing of electrodes coated with porous networks can be realized by inkjet printing. By simultaneous printing of CdSe/CdS dot-in-rod-shaped nanorods (NRs) and the destabilization reagent, CdSe/CdS gel-network-coated electrodes can be obtained. In this work, the charge carrier mobility of the electrons and the holes within the porous CdSe/CdS nanorod gel network is investigated via photoelectrochemistry. Using linear sweep voltammograms (LSVs) and intensity-modulated photocurrent spectroscopy (IMPS), it is shown that the electron is moving within the tip-to-tip-connected CdSe/CdS NR gel structure, while the holes are trapped in the CdSe seed of the semiconductor heterostructures. Furthermore, the preparation process of gel structures is related to the elementary mechanism of hydration, which can be shown via photoelectrochemical long-term studies.
UR - http://www.scopus.com/inward/record.url?scp=85084272310&partnerID=8YFLogxK
U2 - 10.1021/acs.langmuir.9b03708
DO - 10.1021/acs.langmuir.9b03708
M3 - Article
C2 - 32122127
VL - 36
SP - 4757
EP - 4765
JO - Langmuir
JF - Langmuir
SN - 0743-7463
IS - 17
ER -