Study of hole mobility in poly(N-vinylcarbazole) films doped with CdSe/ZnS quantum dots encapsulated by 11-(N-carbazolyl) undecanoic acid (C11)

Khetubol, Adis; Hassinen, Antti; Firdaus, Yuliar; Vanderlinden, Willem; Snick, Sven Van; Flamée, Stijn; Li, Bing; Feyter, Steven De; Hens, Zeger; Dehaen, Wim; Auweraer, Mark Van der

doi:10.1063/1.4827395

Cited by 6 publications

(13 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This enhancement could originate from: a) the improved carrier mobility by the presence of Ag + cations in the pores which generate an alternative pathway to transport the electrons and holes, and b) the RTP mechanism which hinders the non-radiative triplet emission. Both mechanisms have been previously observed in related OLED configurations, 33,37,38 and in this case both processes are expected to contribute in boosting the OLED´s efficiency. The Eu 3+ or Tb 3+ -loaded BDC bioMOFs cannot rely on these mechanisms and consequently feature worse performances in terms of carrier mobility (higher turn-on voltages) and brightness (lower EL intensity).…”

supporting

confidence: 68%

Metal–biomolecule frameworks (BioMOFs): a novel approach for “green” optoelectronic applications

et al. 2022

View full text Add to dashboard Cite

show abstract

supporting

confidence: 68%

Metal–biomolecule frameworks (BioMOFs): a novel approach for “green” optoelectronic applications

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Therefore electron injection in both of them is in principle possible. Holes can efficiently be injected from ITO into PVK, [61] however, it is unlikely that they are injected into the HOMO of the zeolite framework due to the large energy difference. According to literature the band gap of small clusters fits well within the zeolite framework bandgap.…”

Section: Resultsmentioning

confidence: 99%

“…9 Briefly, 500 mg of zeolite powder were suspended in an aqueous silver nitrate solution (500 mL, 0.04 -to 0.5 mM, Sigma-Aldrich, 99% purity), then the suspension was stirred for 2 hours in the dark. The powder was recovered by filtration using a Büchner filter and washed several times with milliQ water, then the sample was calcined overnight at 450 °C (5 °C min [61] zeolite: gray, [63] silver species: red. [28]…”

Section: Methodsmentioning

confidence: 99%

Silver Zeolite Composites‐Based LEDs: A Novel Solid‐State Lighting Approach

Kennes

Coutiño-González

Martín

et al. 2017

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Silver clusters incorporated in a zeolite matrix represent a promising alternative for rare earth phosphors, organic dyes and quantum dots as emitters in organic and hybrid organic/inorganic light emitting diodes (OLEDs). Compared to other existing types of emitters they combine an excellent stability to oxygen and humidity with a high luminescence quantum yield and color tunability. This study reports on the first use of these silver exchanged zeolites embedded in polyvinyl carbazole (PVK), which was expected to act as a conducting matrix, as emitters in a single layer OLED. It is demonstrated that the introduction of these Ag-zeolites leads to electroluminescence bands that clearly differ from pristine PVK OLEDs as well as from the photoluminescence spectra of the Ag-zeolites. The current density and the spectral properties observed in these devices are strongly influenced by the zeolite silver loading, paving the way to a new type of easy tunable hybrid and cost effective OLEDs.

show abstract

“…This value is comparable with results reported in the literature. 77 As described in the Introduction , applying an electric field can change the energy difference between the ATTO HOMO and the PVK HOMO. Hence, also the difference E D °+ / D ° – E A / A °– ° – Δ E 00 will be altered by − E⃗ * r⃗ , where E⃗ is the applied field and r⃗ , a vector with the origin in the center of the ATTO molecule and oriented to that of the carbazole unit responsible for the electron transfer.…”

Section: Resultsmentioning

confidence: 99%

Field-Controlled Charge Separation in a Conductive Matrix at the Single-Molecule Level: Toward Controlling Single-Molecule Fluorescence Intermittency

et al. 2016

Self Cite

View full text Add to dashboard Cite

The fluorescence intermittency or “blinking” of single molecules of ATTO647N (ATTO) in the conductive matrix polyvinylcarbazole (PVK) is described in the presence of an external applied electric field. It is shown that due to the energy distribution of the highest occupied molecular orbital (HOMO) level of PVK, which is energetically close to the HOMO of ATTO, sporadic electron transfer occurs. As a result, the on/off dynamics of blinking can be influenced by the electric field. This field will, depending on the respective position and orientation of the dye/polymer system with respect to those of the electrodes, either enhance or suppress electron transfer from PVK to ATTO as well as the back electron transfer from reduced ATTO to PVK. After the charge-transfer step, the applied field will pull the hole in PVK away from the dye, increasing the overall time the dye resides in a dark state.

show abstract

Study of hole mobility in poly(N-vinylcarbazole) films doped with CdSe/ZnS quantum dots encapsulated by 11-(N-carbazolyl) undecanoic acid (C11)

Cited by 6 publications

References 36 publications

Metal–biomolecule frameworks (BioMOFs): a novel approach for “green” optoelectronic applications

Metal–biomolecule frameworks (BioMOFs): a novel approach for “green” optoelectronic applications

Silver Zeolite Composites‐Based LEDs: A Novel Solid‐State Lighting Approach

Field-Controlled Charge Separation in a Conductive Matrix at the Single-Molecule Level: Toward Controlling Single-Molecule Fluorescence Intermittency

Contact Info

Product

Resources

About