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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 06326naa a2200661 4500 | |
| 001 | oai:DiVA.org:uu-457638 | |
| 003 | SwePub | |
| 008 | 211101s2021 | |||||||||||000 ||eng| | |
| 009 | oai:lup.lub.lu.se:e73df553-4f21-4f2a-a076-3dcf5da2929e | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4576382 URI |
| 024 | 7 | a https://doi.org/10.1021/acsami.1c116762 DOI |
| 024 | 7 | a https://lup.lub.lu.se/record/e73df553-4f21-4f2a-a076-3dcf5da2929e2 URI |
| 040 | a (SwePub)uud (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Alvarez, Sol Gutierrezu Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark.,Technical University of Denmark4 aut |
| 245 | 1 0 | a Charge Carrier Diffusion Dynamics in Multisized Quaternary Alkylammonium-Capped CsPbBr3 Perovskite Nanocrystal Solids |
| 264 | c 2021-09-13 | |
| 264 | 1 | b American Chemical Society (ACS),c 2021 |
| 338 | a electronic2 rdacarrier | |
| 520 | a CsPbBr3 quantum dots (QDs) are promising candidates for optoelectronic devices. The substitution of oleic acid ( OA) and oleylamine ( OLA) capping agents with a quaternary alkylammonium such as di-dodecyl dimethyl ammonium bromide (DDAB) has shown an increase in external quantum efficiency (EQE) from 0.19% (OA/OLA) to 13.4% (DDAB) in LED devices. The device performance significantly depends on both the diffusion length and the mobility of photoexcited charge carriers in QD solids. Therefore, we investigated the charge carrier transport dynamics in DDAB-capped CsPbBr3 QD solids by constructing a bi-sized QD mixture film. Charge carrier diffusion can be monitored by quantitatively varying the ratio between two sizes of QDs, which varies the mean free path of the carriers in each QD cluster. Excited-state dynamics of the QD solids obtained from ultrafast transient absorption spectroscopy reveals that the photogenerated electrons and holes are difficult to diffuse among small-sized QDs (4 nm) due to the strong quantum confinement. On the other hand, both photoinduced electrons and holes in large-sized QDs (10 nm) would diffuse toward the interface with the small-sized QDs, followed by a recombination process. Combining the carrier diffusion study with a Monte Carlo simulation on the QD assembly in the mixture films, we can calculate the diffusion lengths of charge carriers to be similar to 239 +/- 16 nm in 10 nm CsPbBr3 QDs and the mobility values of electrons and holes to be 2.1 (+/- 0.1) and 0.69 (+/- 0.03) cm(2)/V s, respectively. Both parameters indicate an efficient charge carrier transport in DDAB-capped QD films, which rationalized the perfect performance of their LED device application. | |
| 650 | 7 | a NATURVETENSKAPx Kemix Materialkemi0 (SwePub)104032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Materials Chemistry0 (SwePub)104032 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Fysikx Den kondenserade materiens fysik0 (SwePub)103042 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Condensed Matter Physics0 (SwePub)103042 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Kemix Fysikalisk kemi0 (SwePub)104022 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Physical Chemistry0 (SwePub)104022 hsv//eng |
| 653 | a ultrafast spectroscopy | |
| 653 | a diffusion lengths | |
| 653 | a CsPbBr3 | |
| 653 | a DDAB | |
| 653 | a quantum dot photovoltaics | |
| 653 | a carrier transport | |
| 653 | a charge transfer | |
| 653 | a carrier transport | |
| 653 | a charge transfer | |
| 653 | a CsPbBr | |
| 653 | a DDAB | |
| 653 | a diffusion lengths | |
| 653 | a quantum dot photovoltaics | |
| 653 | a ultrafast spectroscopy | |
| 700 | 1 | a Lin, Weihuau Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)li0306we |
| 700 | 1 | a Abdellah, Mohamedu Uppsala University,Uppsala universitet,Fysikalisk kemi4 aut0 (Swepub:lu)mo5485ab |
| 700 | 1 | a Meng, Jieu Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark.,Technical University of Denmark4 aut |
| 700 | 1 | a Žídek, Karelu Czech Acad Sci, Vvi, Inst Plasma Phys, Res Ctr Special Opt & Optoelect Syst TOPTEC, Prague 18200 8, Czech Republic.,Institute of Plasma Physics, Academy of Sciences of the Czech Republic4 aut0 (Swepub:lu)chem-kzd |
| 700 | 1 | a Pullerits, Tõnuu Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)chph-tp |
| 700 | 1 | a Zheng, Kaibou Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)chem-kbz |
| 710 | 2 | a Tech Univ Denmark, Dept Chem, DK-2800 Lyngby, Denmark.b Technical University of Denmark4 org |
| 773 | 0 | t ACS Applied Materials and Interfacesd : American Chemical Society (ACS)g 13:37, s. 44742-44750q 13:37<44742-44750x 1944-8244x 1944-8252 |
| 856 | 4 | u https://doi.org/10.1021/acsami.1c11676y Fulltext |
| 856 | 4 | u https://uu.diva-portal.org/smash/get/diva2:1607535/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print |
| 856 | 4 | u https://pubs.acs.org/doi/pdf/10.1021/acsami.1c11676 |
| 856 | 4 | u http://dx.doi.org/10.1021/acsami.1c11676x freey FULLTEXT |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-457638 |
| 856 | 4 8 | u https://doi.org/10.1021/acsami.1c11676 |
| 856 | 4 8 | u https://lup.lub.lu.se/record/e73df553-4f21-4f2a-a076-3dcf5da2929e |
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