Stephen R. Forrest
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Perspective: OLED Displays Singing with the Blues Open
While blue pixels consume approximately 50% of the energy of organic light‐emitting diode (OLED) display front planes, in the 25 years since their invention, 100% internal efficiency phosphorescent OLEDs (PHOLEDs) have not met the stabilit…
An evaluation of screening methods for the detection of extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae in environmental samples from healthcare settings Open
Drug-resistant infections with extended-spectrum beta-lactamase-producing Enterobacterales (ESBL-E) are increasingly problematic, especially in healthcare settings. ESBL-E infections lead to a worse treatment outcome and often require esca…
Increasing the Stability of Deep Blue Phosphor‐Sensitized OLEDs Using the Polariton‐Enhanced Purcell Effect Open
The stability of efficient, deep blue organic light‐emitting diodes (OLEDs) remains a major challenge in the field of organic electronics. Poor device stability originates from the high probability for destructive non‐radiative triplet exc…
Organic photovoltaic device having a lateral charge transport channel Open
Organic photovoltaic cells (OPVs) and their compositions are described herein. In one or more embodiments, the OPV or solar cell includes a first electrode (e.g., cathode); a second electrode (e.g., anode); an active layer positioned betwe…
Mechanically stacked tandem photovoltaic cells with intermediate optical filters Open
A method of fabricating a multi-junction photosensitive device is provided. The method may include fabricating at least two photoactive layers, wherein at least one photoactive layer is fabricated on a transparent substrate, and at least o…
Optimized methods for the targeted surveillance of extended-spectrum beta-lactamase-producing <i>Escherichia coli</i> in human stool Open
Understanding transmission pathways of important opportunistic, drug-resistant pathogens, such as extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli , is essential to implementing targeted prevention strategies to interrupt…
Understanding and Controlling the Formation of Nonradiative Defects in Blue Organic Triplet Emitters Open
Phosphorescent organic light-emitting devices (PHOLEDs) suffer from destructive molecular processes due to triplet-polaron and triplet-triplet annihilation. These processes are energetically driven and hence are particularly active in decr…
View article: Molecular mechanisms of re-emerging chloramphenicol susceptibility in extended-spectrum beta-lactamase-producing Enterobacterales
Molecular mechanisms of re-emerging chloramphenicol susceptibility in extended-spectrum beta-lactamase-producing Enterobacterales Open
Infections with Enterobacterales (E) are increasingly difficult to treat due to antimicrobial resistance. After ceftriaxone replaced chloramphenicol (CHL) as empiric therapy for suspected sepsis in Malawi in 2004, extended-spectrum beta-la…
Color‐Stable, All‐Phosphorescent White Organic Light Emitting Diodes Using the Polariton‐Enhanced Purcell Effect Open
The short operational lifetimes of high efficiency phosphorescent organic blue light emitting devices (PHOLEDs) has limited their use in displays and lighting. Previously, this problem has been avoided by using less efficient fluorescent b…
View article: Ultrafast Dynamics of Bloch Surface Wave Polaritons in Large‐Area 2D Semiconductor Monolayers at Room Temperature
Ultrafast Dynamics of Bloch Surface Wave Polaritons in Large‐Area 2D Semiconductor Monolayers at Room Temperature Open
The dynamics of strongly coupled polariton systems integrated with 2D transition metal dichalcogenides (TMDs) is key to enabling efficient coherent processes and achieving high‐performance TMD‐based polaritonic devices, such as ultralow‐th…
Excitonic Shockley-Read-Hall recombination in organic semiconductors Open
Trap-mediated recombination influences the performance of a wide range of electronic devices. The well-known Shockley-Read-Hall (SRH) expression for inorganic semiconductors is often invoked to describe the recombination rate in organic ma…
Optimised methods for the targeted surveillance of extended-spectrum beta-lactamase producing<i>Escherichia coli</i>in human stool Open
Understanding transmission pathways of important opportunistic, drug resistant pathogens, such as extended-spectrum beta-lactamase (ESBL) producing Escherichia coli, is essential to implementing targeted prevention strategies to interrupt …
System and method for organic electronic device patterning Open
A method for fabricating an organic electronic device comprises providing a plurality of photoresist structures on a substrate, the substrate having a first electrode layer, the photoresist structures having a bottom surface attached to th…
View article: Excited state management
Excited state management Open
Arrangements and techniques for providing organic emissive layers are provided, in which the emissive layer includes a first dopant having a dissociative energy level. A second dopant in the emissive layer provides a solid state sink energ…
Organic photosensitive devices made using semi-orthogonal solvents and methods of making the same Open
Disclosed herein are organic photosensitive optoelectronic device comprising a first layer comprising one or more of a first layer material, a second layer comprising one or more of a second layer material, and a third layer comprising one…
Multijunction organic photovoltaics incorporating solution and vacuum deposited active layers Open
There is disclosed an organic photovoltaic device comprising at least one first subcell comprising at least one first small molecular weight material deposited by solution processing, and at least one second subcell comprising a weight at …
Fabrication of thin-film electronic devices with non-destructive wafer reuse Open
Thin-film electronic devices such as LED devices and field effect transistor devices are fabricated using a non-destructive epitaxial lift-off technique that allows indefinite reuse of a growth substrate. The method includes providing an e…
High Quality Factor Microcavity for Van der Waals Semiconductor Polaritons Using a Transferrable Mirror Open
Adv. Optical Mater. 2023, 11, 2201440. https://doi.org/10.1002/adom.202201440 In the acknowledgements section, an internal ID number (N031710) was inadvertently included for the grant from the Gordon and Betty Moore Foundation. The correct…
View article: Molecular mechanisms of re-emerging chloramphenicol susceptibility in extended-spectrum beta-lactamase producing Enterobacterales
Molecular mechanisms of re-emerging chloramphenicol susceptibility in extended-spectrum beta-lactamase producing Enterobacterales Open
Infections with Enterobacterales (E) are increasingly difficult to treat due to antimicrobial resistance. After ceftriaxone replaced chloramphenicol (CHL) as empiric therapy for suspected sepsis in Malawi in 2004, ESBL-E rapidly emerged. C…
View article: Blue and Near-UV Phosphorescence from Iridium Complexes with Cyclometalated Pyrazolyl or N-Heterocyclic Carbene Ligands
Blue and Near-UV Phosphorescence from Iridium Complexes with Cyclometalated Pyrazolyl or N-Heterocyclic Carbene Ligands Open
Two approaches are reported to achieve efficient blue to near-UV emission from triscyclometalated iridium(III)\nmaterials related to the previously reported complex, fac-Ir(ppz)3 (ppz = 1-phenylpyrazolyl-N,C2‘). The first involves\nreplace…
Highly Efficient Photo- and Electroluminescence from Two-Coordinate Cu(I) Complexes Featuring Nonconventional N-Heterocyclic Carbenes Open
A series of six luminescent two-coordinate\nCu(I) complexes were\ninvestigated bearing nonconventional N-heterocyclic carbene ligands,\nmonoamido-aminocarbene (MAC*) and diamidocarbene (DAC*), along with\ncarbazolyl (Cz) as well as mono- …
View article: Highly Phosphorescent Bis-Cyclometalated Iridium Complexes: Synthesis, Photophysical Characterization, and Use in Organic Light Emitting Diodes
Highly Phosphorescent Bis-Cyclometalated Iridium Complexes: Synthesis, Photophysical Characterization, and Use in Organic Light Emitting Diodes Open
The synthesis and photophysical study of a family of cyclometalated iridium(III) complexes are\nreported. The iridium complexes have two cyclometalated (C∧N) ligands and a single monoanionic, bidentate\nancillary ligand (LX), i.e., C∧N2Ir(…
Ultrahigh Energy Gap Hosts in Deep Blue Organic Electrophosphorescent Devices Open
Four ultrahigh energy gap organosilicon compounds [diphenyldi(o-tolyl)silane (UGH1),\np-bis(triphenylsilyl)benzene (UGH2), m-bis(triphenylsilyl)benzene (UGH3), and 9,9‘-spirobisilaanthracene (UGH4)] were employed as host materials in the e…
From Deposition to Encapsulation: Roll-to-roll manufacturing of organic light emitting devices for lighting (Final Report) Open
Organic light emitting devices (OLEDs) are promising solid state light sources due to their high efficiency, high color quality and flexible form factors. The key to enable low cost OLED lighting, is to rapidly fabricate thin film organic …
Enhanced OLED outcoupling by suppressing surface plasmon modes Open
A number of new solutions for enhancing the extraction of waveguided mode and suppressing surface plasmon polariton mode in OLEDs are disclosed.