Photon correlations probe the quantized nature of light emission from optoelectronic materials

JM Lupton, J Vogelsang - Applied Physics Reviews, 2021 - pubs.aip.org
Even though the quantized interaction between light and matter in the photoelectric effect is
considered one of the cornerstones in the development of quantum mechanics, it was long …

Polaron-induced upconversion from triplets to singlets: Fluorescence-and phosphorescence-resolved optically detected magnetic resonance of OLEDs

F Braun, T Scharff, T Grünbaum, E Schmid, S Bange… - Physical Review …, 2023 - APS
The modest spin-orbit coupling arising from the n-π* transitions of phenazine complexes
offers the unique means to activate the dual emission of singlets and triplets, ie …

Highly anisotropic magnetoresistance of organic light-emitting diodes at geomagnetic field strengths

T Grünbaum, VV Mkhitaryan, E Schmid, F Dallinger… - Physical Review B, 2023 - APS
At geomagnetic field strengths, polymer organic light-emitting diodes (OLEDs) exhibit a giant
anisotropy in magnetoresistance of up to 35%. Comparison of the effect arising from a …

Monolithic OLED-microwire devices for ultrastrong magnetic resonant excitation

S Jamali, G Joshi, H Malissa, JM Lupton… - Nano Letters, 2017 - ACS Publications
Organic light-emitting diodes (OLEDs) make highly sensitive probes to test magnetic
resonance phenomena under unconventional conditions since spin precession controls …

Nanotesla magnetoresistance in π-conjugated polymer devices

P Klemm, S Bange, A Pöllmann, C Boehme, JM Lupton - Physical Review B, 2017 - APS
We demonstrate submicrotesla sensitivity of organic magnetoresistance in thin-film diodes
made of the conducting polymer poly (styrene sulfonate)-doped poly (3, 4 …

Revealing weak spin-orbit coupling effects on charge carriers in a -conjugated polymer

H Malissa, R Miller, DL Baird, S Jamali, G Joshi… - Physical Review B, 2018 - APS
We measure electrically detected magnetic resonance on organic light-emitting diodes
made of the polymer poly [2-methoxy-5-(2-ethylhexyloxy)-1, 4-phenylenevinylene] at room …

Perdeuteration of poly [2-methoxy-5-(2′-ethylhexyloxy)-1, 4-phenylenevinylene](d-MEH-PPV): control of microscopic charge-carrier spin–spin coupling and of …

DM Stoltzfus, G Joshi, H Popli, S Jamali… - Journal of Materials …, 2020 - pubs.rsc.org
Control of the effective local hyperfine fields in a conjugated polymer, poly [2-methoxy-5-(2′-
ethylhexyloxy)-1, 4-phenylenevinylene](MEH-PPV), by isotopic engineering is reported …

Direct detection of singlet-triplet interconversion in OLED magnetoelectroluminescence with a metal-free fluorescence-phosphorescence dual emitter

W Ratzke, S Bange, JM Lupton - Physical Review Applied, 2018 - APS
We demonstrate that a simple phenazine derivative can serve as a dual emitter for organic
light-emitting diodes, showing simultaneous luminescence from the singlet and triplet …

Morphology effects on spin-dependent transport and recombination in polyfluorene thin films

R Miller, KJ Van Schooten, H Malissa, G Joshi… - Physical Review B, 2016 - APS
We have studied the role of spin-dependent processes on conductivity in polyfluorene (PFO)
thin films by preforming continuous wave (cw) electrically detected magnetic resonance …

Magnetic Field Effects of Charge Transfer Excitons in Organic Semiconductor Devices

D Nikiforov, E Ehrenfreund - Israel Journal of Chemistry, 2022 - Wiley Online Library
The topic of this review is the effect of magnetic field on photo‐current (PC) in organic
semiconductor devices. Magnetic field modifies the fraction of the singlet/triplet population in …