Results 111 to 120 of about 53,098 (215)

Al1−xHfxN$\text{Al$_{1-x}$Hf$_{x}$N}$ Thin Films with Enhanced Piezoelectric Responses for GHz Surface Acoustic Wave Devices

open access: yesAdvanced Electronic Materials, EarlyView.
Reactively sputtered wurtzite Al1‐xHfxN thin films, exhibiting strong c‐axis texture and enhanced piezoelectric response, are demonstrated as a cost‐effective alternative to Al1‐xScxN. X‐ray absorption spectroscopy reveals that cross‐gap N 2p–Hf 5d hybridization increases the Born effective charge and enables a multifold increase in piezoelectric ...
Laura I. Wagner   +14 more
wiley   +1 more source

Polymer Sequence Design of Zwitterionic Polymer/PEDOT:PSS Blend Films for Improved Charge Transport and Stability in Organic Electrochemical Transistors

open access: yesAdvanced Electronic Materials, EarlyView.
Solution blending of zwitterionic polymers with PEDOT:PSS provides a simple route to OECT materials with enhanced threshold voltage stability in biologically relevant environments. The polymer sequence alters outer‐domain structure within the preserved PEDOT:PSS framework, thereby tuning charge transport.
Wakana Takahashi   +3 more
wiley   +1 more source

Controlling Self‐Doping in Conjugated Polyelectrolyte Copolymers to Vary the Threshold Voltage in OECTs

open access: yesAdvanced Electronic Materials, EarlyView.
Two series of self‐doped conjugated polyelectrolytes are synthesized from a non‐self‐dopable building block 3MEEET and a self‐dopable building‐block 3HOT−[TMA+] or 3HOT−[SO3H] enabling precise control over the degree of self‐doping, which in turn directly governs the threshold voltage (VT) in OECTs over a wide range of 700 mV.
Julian Hungenberg   +7 more
wiley   +1 more source

Pairing Non‐Fullerene Acceptors With the Right Polymer: Impact of Phase Morphology and Short‐Range Transport on Charge Generation

open access: yesAdvanced Electronic Materials, EarlyView.
This study investigates polymer requirements for pairing with high‐efficiency non‐fullerene acceptors (NFA) in organic photovoltaics by comparing three polymer blends across varied phase morphologies. The generation of free charges is driven by fast transport‐assisted charge separation combined with slow intrinsic recombination.
Yufei Zhong   +9 more
wiley   +1 more source

Towards Ideal Electron‐Transporting Transistor Characteristics in Polymer Semiconductors in Ambient Air

open access: yesAdvanced Electronic Materials, EarlyView.
We report a coexistence of a reliability factor of 90% and high electron mobility of 0.6 cm2 V−1 s−1 in FBDPPV‐based n‐type polymer field‐effect transistors. Efficient electron transport in this rigid, coplanar, distortion‐free polymer that induces high mobility and ideal transistor behaviors is supported by efficient intrachain transport and limited ...
Hio‐Ieng Un   +7 more
wiley   +1 more source

Low‐Dimensional Metal Halide‐Organic Interdigitated p/n Heterojunction Solar Cells Enabled by Thiomorpholine Hydroiodide Additive

open access: yesAdvanced Electronic Materials, EarlyView.
Thiomorpholine hydroiodide has been developed for regulating crystallization kinetics and passivating defects of two‐dimensional metal halides, enabling the low‐dimensional metal halide‐organic interdigitated p/n heterojunction solar cells to exhibit an efficiency of 24.27% with excellent stability. ABSTRACT Low‐dimensional metal halides are attractive
Jiahao Zhang   +5 more
wiley   +1 more source

Advancing Energy Materials by In Situ Atomic Scale Methods

open access: yesAdvanced Energy Materials, Volume 15, Issue 11, March 18, 2025.
Progress in in situ atomic scale methods leads to an improved understanding of new and advanced energy materials, where a local understanding of complex, inhomogeneous systems or interfaces down to the atomic scale and quantum level is required. Topics from photovoltaics, dissipation losses, phase transitions, and chemical energy conversion are ...
Christian Jooss   +21 more
wiley   +1 more source

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