Correlation between electroluminescence, charge transport and photophysical properties of polymer blends

Prakash, Amit; Katiyar, Monica

doi:10.1016/j.synthmet.2016.11.019

Cited by 8 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the excited stripe does not affect the emission width then super-fluorescence and bi-excitonic emissions are the mechanisms that are responsible for line narrowing, and the output intensity linearly increases with the excited stripe. The value of g(λ) measured for the P5T crystal was 72 cm −1 which is much better than those measured for other organic materials, such as 22 cm −1 for poly-(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT), 13 cm −1 for oligo-(p-phenylenevinylene), and 16 cm -1 for N,N´-bis(3-methylphenyl)-N,N´-diphenylbenzidine (TPD) [34,37]. The large value of g(λ) suggests the potential of P5T crystals for potential applications in optical amplifiers, solid state lasers, OLEFETs, and OLEDs.…”

Section: Resultsmentioning

confidence: 66%

“…One of the important parameters for photonic materials is the PLQE that justifies the potential of a material for light emitting and laser applications. Figure 7 shows the PLQE measurements of the P5T crystal that exhibits a higher value of 68.24% than other organic semiconductors such as polyfluorene (PFO) and poly-(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV), which have PLQE values of 51.6% and 6.8%, respectively [37]. This suggests that P5T is to be effectively used for its potential applications in oligomer-based lasers and OLEFETs.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Amplified Spontaneous Emission and Optical Gain in Organic Single Crystal Quinquethiophene

et al. 2019

View full text Add to dashboard Cite

In this paper, we report optical characteristics of an organic single crystal oligomer 5,5 -diphenyl-2,2 :5 ,2"":5",2 :5 ,2 -quinquethiophene (P5T). P5T crystal is a thiophene/phenylene co-oligomer that possesses better charge mobility as well as photoluminescence quantum efficiency (PLQE) as compared to other organic materials. Stimulated emission in P5T is investigated via amplified spontaneous emission (ASE) measurements within broad pump energies ranging from 35.26 to 163.34 µJ/cm 2 . An Nd-YAG femtosecond-tunable pulsed laser is used as a pump energy source for the ASE measurements of P5T crystals at an excitation wavelength of 445 nm. The ASE spectra exhibit optical amplification in P5T crystals at a 625 nm peak wavelength with a lower threshold energy density (E th ) ≈ 52.64 µJ/cm 2 . P5T also demonstrates higher optical gain with a value of 72 cm −1 , that is calculated by using the variable stripe-length method. The value of PLQE is measured to be 68.24% for P5T. This study proposes potential applications of P5T single crystals in organic solid state lasers, photodetectors, and optical amplifiers.

show abstract

Section: Resultsmentioning

confidence: 66%

Section: Resultsmentioning

confidence: 99%

Amplified Spontaneous Emission and Optical Gain in Organic Single Crystal Quinquethiophene

et al. 2019

View full text Add to dashboard Cite

show abstract

“…When the sample was applied in diodes (PLEDs), they also found that the concentration of MEH-PPV had a significant influence on the carrier mobility of the diode. 95 By using the electroluminescence transient technique, it was found that at lower concentrations (≤1.2 wt%), the carrier mobility increased with increasing concentration. However, at higher concentrations (>1.2 wt%), as the concentration increased, the carrier mobility decreased, even lower than that of diodes prepared with pure PFO.…”

Section: Influence Of Concentration On Polyphenylene-vinylene In Solu...mentioning

confidence: 99%

“…At relatively high concentrations (greater than 1.2 wt%), the mobility of the mixed films decreased as the concentration of MEH‐PPV increased. When the sample was applied in diodes (PLEDs), they also found that the concentration of MEH‐PPV had a significant influence on the carrier mobility of the diode 95 . By using the electroluminescence transient technique, it was found that at lower concentrations (≤1.2 wt%), the carrier mobility increased with increasing concentration.…”

Section: Influence Of Concentration On Polyphenylene‐vinylene In Solu...mentioning

confidence: 99%

Concentration effect on the chain structure and photoelectric properties of conjugated polymer precursor solutions and thin films: A mini review

Zhang,

Cheng,

et al. 2023

Journal of Polymer Science

View full text Add to dashboard Cite

Conjugated polymers have attracted extensive attention in numerous research fields because of their exceptional photoelectric properties and distinctive solution processing capabilities. The conformation of the chain and the structure of the condensed state in solution are closely related to various factors, such as concentration and solvent. Concentration, as a significant external parameter, plays a crucial role in the self‐assembly and formation of crystalline structures in conjugated polymers. It also affects the properties of the solution, the structure of the membrane, and the performance of the fabricated devices. Recently, there have been an increasing number of studies conducted from the perspective of solution concentration. Therefore, it is important to comprehensively summarize the effect of concentration on the transition process of chain structure from solution to film, as well as the impact of concentration on the performance of related devices. In this review, we summarize the effects of concentration on the chain motion, particle size, ordered structure, and photoelectric properties of conjugated polymers in solutions and thin films, as well as on device efficiency. This provides a unique perspective on the fundamental characteristics of conjugated polymers, which can assist in the development and improvement of optoelectronic devices.

show abstract

Doping-induced modulation of optical properties of PFO/PMMA composite films

et al. 2020

View full text Add to dashboard Cite

Correlation between electroluminescence, charge transport and photophysical properties of polymer blends

Cited by 8 publications

References 41 publications

Amplified Spontaneous Emission and Optical Gain in Organic Single Crystal Quinquethiophene

Amplified Spontaneous Emission and Optical Gain in Organic Single Crystal Quinquethiophene

Concentration effect on the chain structure and photoelectric properties of conjugated polymer precursor solutions and thin films: A mini review

Doping-induced modulation of optical properties of PFO/PMMA composite films

Contact Info

Product

Resources

About