Experimental Determination of the Absorption Cross-Section and Molar Extinction Coefficient of Colloidal CdSe Nanoplatelets

Download
2015-11-01
Yeltik, Aydan
Delikanli, Savas
Olutas, Murat
Keleştemur, Yusuf
Guzelturk, Burak
Demir, Hilmi Volkan
There has been a strong interest in solution-processed two-dimensional nanomaterials because of their great potential in optoelectronics. Here, the absorption cross-section and molar extinction coefficient of four and five monolayer thick colloidal CdSe nanoplatelets (NPLs) having various lateral sizes are reported. The absorption cross-section of these NPLs and their corresponding molar extinction coefficients are found to strongly depend on the lateral area. An excellent agreement is observed between the experimental results and the calculated values based on the small-particle light absorption model. With these optical properties, NPLs hold great promise for optoelectronic applications.
JOURNAL OF PHYSICAL CHEMISTRY C

Suggestions

Investigation of carboxyl-functionalized self-assembled monolayers on gold surfaces.
Görgülü, Salih; Danışman, Mehmet Fatih; Department of Chemistry (2020)
Thiolated derivatives of dicarba-closo-dodecaborane, HS-C 2 B 10 H 11 (carboranethiol, CT), with icosahedral molecular structure are one of the promising candidates for self-assembled monolayer (SAM) applications. CT SAMs possess various advantages relative to their organic counterparts, such as high stability towards chemical, oxidative and thermal degradations as well as having fewer defects. In this study unfunctionalized CT SAMs (M1, M9) and carboxylic group functionalized CT SAMs (M1C, M9C) as well as ...
Scanning probe measurements on luminescent Si nanoclusters in SiO2 films
Mayandi, J.; Finstad, T. G.; Thogersen, A.; Foss, S.; Serincan, U.; Turan, Raşit (Elsevier BV, 2007-06-04)
Embedded Si nanocrystals in SiO2 have a large current interest due to the prospects for practical applications. For most of these it is essential to characterize and ultimately control the nanocrystal size, size distribution and spatial distribution. Here we present a study of Si nanocrystals and clusters in SiO2 studied by atomic force microscopy (AFM). Since it is an indirect method, it requires several other methods to establish a reliable description of the structure of the samples. We here compare the ...
Synthesis of novel chiral thiourea derivatives and their applications, synthesis of some hdac inhibitors, addition of acyl phosphonates to ethylcyanoformate
Sağlam, Gülüzar; Demir, Ayhan Sıtkı; Department of Chemistry (2008)
The thiourea derivatives have become a main focus of research in asymmetric synthesis as an organocatalyst in recent years. In the first part, the thiourea catalysts are synthesized starting from easily available L-tartaric acid and application of the catalysts to some addition reactions showed no significant asymmetric induction. A number of HDAC inhibitors have been developed as anti-cancer agent at the present time.In the second part, some aryl butenoic acid derivatives are synthesized as HDAC inhibitors...
Chaotic behavior of triatomic clusters
Yurtsever, E; Elmaci, N (1997-01-01)
The dynamics of triatomic clusters is investigated employing two-body Lennard-Jones and three-body Axilrod-Teller potential functions. Lyapunov exponents are calculated for the total energy range of -2.70 epsilon <E< -0.72 epsilon. The effects of the initial geometry of the cluster, its angular momentum, and the magnitude of three-body interactions are analyzed. It has been found that the dominating factor for the extent of chaotic behavior is the energy assigned to vibrational modes. The introduction of th...
Thermal conductivity and photoluminescence of light-emitting silicon nitride films
Marconnet, Amy; Panzer, Matt; Yerci, Selçuk; Minissale, Salvatore; Wang, X.; Zhang, X.; Dal Negro, Luca; Goodson, K. E. (2012-01-30)
Silicon-rich and rare-earth-doped nitride materials are promising candidates for silicon-compatible photonic sources. This work investigates the thermal conductivity and photoluminescence (PL) of light emitting samples fabricated with a range of excess silicon concentrations and annealing temperatures using time-domain picosecond thermoreflectance and time-resolved photoluminescence. A direct correlation between the thermal conductivity and photoluminescence dynamics is demonstrated, as well as a significan...
Citation Formats
A. Yeltik, S. Delikanli, M. Olutas, Y. Keleştemur, B. Guzelturk, and H. V. Demir, “Experimental Determination of the Absorption Cross-Section and Molar Extinction Coefficient of Colloidal CdSe Nanoplatelets,” JOURNAL OF PHYSICAL CHEMISTRY C, vol. 119, no. 47, pp. 26768–26775, 2015, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/92522.