Abstract:Steady‐state and time‐resolved photoluminescence (PL) and electrophotoluminescence (E‐PL) have been recorded for bulk heterojunction samples of thin films of regio‐regular poly(3‐hexylthiophene) (P3HT) and methyl [6,6]‐phenyl‐C61‐butanoate (PCBM). The PL spectra of the bulk heterojunction samples showed a monotonic decrease of PL quantum yield with increased PCBM content in the film. The PL decay was measured with both a femtosecond up‐conversion technique and a time‐correlated single‐photon‐counting technique… Show more
“…With the growth of Alq 3 doping concentration, the luminescence peak has a slight red shi, which is attributed to the aggregation of Alq 3 molecules in the luminescent layer. 23 In considering the impact of external voltage on the magnetic effect of heterojunction devices, Fig. 2 shows the MEL curved line of four devices at different voltages.…”
Section: Resultsmentioning
confidence: 99%
“…With the growth of Alq 3 doping concentration, the luminescence peak has a slight red shift, which is attributed to the aggregation of Alq 3 molecules in the luminescent layer. 23 …”
Organic light-emitting diodes (OLEDs) are considered one of the most promising new display technologies owing to their advantages, such as all-solid-state, high color gamut, and wide viewing angle.
“…With the growth of Alq 3 doping concentration, the luminescence peak has a slight red shi, which is attributed to the aggregation of Alq 3 molecules in the luminescent layer. 23 In considering the impact of external voltage on the magnetic effect of heterojunction devices, Fig. 2 shows the MEL curved line of four devices at different voltages.…”
Section: Resultsmentioning
confidence: 99%
“…With the growth of Alq 3 doping concentration, the luminescence peak has a slight red shift, which is attributed to the aggregation of Alq 3 molecules in the luminescent layer. 23 …”
Organic light-emitting diodes (OLEDs) are considered one of the most promising new display technologies owing to their advantages, such as all-solid-state, high color gamut, and wide viewing angle.
“…[73][74][75] Generally, fullerene acceptors exhibit a notably low photoluminescence quantum yield (PLQY); therefore, PL quenching experiments can conrm the efficiency of exciton dissociation generated from absorption in the polymer donor. 76,77 All pristine lms exhibited Stokes-shied PL spectra between 650 nm and 850 nm when excited at 600 nm. Interestingly, all of the blend lms exhibited almost quenched spectra, with a PL quenching efficiency DPL ¼ PL pristine À PL blend PL pristine of over 98% for all four blends.…”
Section: Device Performance Under 1-sun and Indoor Light Sourcesmentioning
We present highly efficient IOPV devices based on four series of wide band gap random copolymers, denoted as B30T70-XCl (X = 0, 2, 4, and 6). These copolymers efficiently cover...
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