Photoluminescence dynamics of thiophene/phenylene co-oligomer thin films based on Förster energy transfer

Photo- and electroluminescence in a series of PPV type terpolymers containing fluorene, thiophene and phenylene units

“…Due to the non-available data for the size and size distribution of both fluorene and thiophene blocks and to the complex description of the wavelength dependence with the size of both absorption and emission bands in the presence of energy transfer processes, we have not attempted to calculated the Förster radium for the FRET process. Nevertheless, Förster radium for FRET of thiophene-phenylene oligomers of different sizes has been reported to be in the range of 3.4-3.9 nm [48].…”

All‐Optical Switching and Two‐States Light‐Controlled Coherent‐Incoherent Random Lasing in a Thiophene‐Based Donor‐Acceptor System

“…It was proven in the literature that light amplification in the way of amplified spontaneous emission (ASE) or by simple spectrally narrowed emission (SNE) for co‐oligomers containing thiophene moiety was possible . Moreover, the photoluminescence (PL) dynamics with applied Förster energy transfer (FRET) in the films were observed and described . The most efficient light amplification (organic laser) has been observed for the two different neat films of electroluminescent oligothiophenes .…”

Large gain for crystalline thin films of thiophene/phenylene co-oligomer by photopumping with femtosecond laser pulses

“…In contrast to the initial state, the peak intensity at 465 nm was greater than that at 495 nm. The duration of the femtosecond laser pulse was 200 fs, and was much shorter than the excited state lifetime in BP1T (around 0.7 ns) [15]. Therefore, reabsorption could not occur during irradiation above the amplified spontaneous emission (ASE) threshold because reabsorption hardly occurs during population inversion.…”