Results 61 to 70 of about 4,656 (298)

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

Leakage Current Mechanisms in SiGe HBTs Fabricated Using Selective and Nonselective Epitaxy [PDF]

, 2001
SiGe heterojunction bipolar transistors (HTBs) have been fabricated using selective epitaxy for the Si collector, followed in the same growth step by nonselective epitaxy for the p+ SiGe base and n-Si emitter cap.
Ashburn, Peter, Lamb, Andrew C., Bonar, J.M., Cristiano, Fuccio, Bonar, J. M., Hemment, P. L. F., Schiz, J. F. W., Hemment, Peter L. F., Hall, Stephen, Schiz, J.F.W.   +9 more
core  

PbS quantum dot enhanced p-CIGS/n-Si heterojunction diode [PDF]

, 2019
Nanoparticles enable novel approaches to light converter devices that may allow preventing the energy loss related to spectral mismatch, by enlarging the absorption range from UV to IR.
Ercelebi, Cigdem, Candan, Idris, Parlak, Mehmet   +2 more
core   +1 more source

n-ZnO/p-GaN heterojunction light-emitting diodes featuring a buried polarization-induced tunneling junction

AIP Advances, 2016
n-ZnO/p-GaN heterojunction light-emitting diodes with a p-GaN/Al0.1Ga0.9N/n+-GaN polarization-induced tunneling junction (PITJ) were fabricated by metal-organic chemical vapor deposition.
Ling Li, Yuantao Zhang, Long Yan, Junyan Jiang, Xu Han, Gaoqiang Deng, Chen Chi, Junfeng Song   +7 more
doaj   +1 more source

Rethinking Charge Transport and Recombination in Donor‐Diluted Organic Solar Cells

Advanced Materials, EarlyView.
Organic solar cells with 1–45% PM6 content in Y12 were studied to link structure and charge dynamics to performance. The conductivity follows a 3D percolation model without a sharp threshold. Donor dilution preserves the photogeneration yield, but limits the fill factor due to transport resistance losses.
Chen Wang, Christopher Wöpke, Toni Seiler, Jared Faisst, Mathias List, Meike Kuhn, Bekcy Joseph, Alexander Ehm, Dietrich R. T. Zahn, Yana Vaynzof, Eva M. Herzig, Roderick C. I. Mackenzie, Uli Würfel, Maria Saladina, Carsten Deibel   +14 more
wiley   +1 more source

The influence of dipoles orientation on the charge transport mechanism of Au/rr-P3HT/P(VDF-TrFE) heterojunction diode in the form of 1D-line grating nanostructure arrays

Results in Physics, 2019
One dimension line grating nanostructure arrays of organic ferroelectric/semiconductor (P3HT/PVDF-TrFE) hetero-junction was developed via nanoimprinted lithography technique.
F.S. Shokr
doaj   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

Advanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald, Hiroki Tomita, Giacomo Cotelli, Louka L. Brüll, Nanno G. de Rooij, Lucas R.L. Norg, Milo Clément, Reinder Coehoorn   +7 more
wiley   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Negative Differential Resistance of n-ZnO Nanorods/p-degenerated Diamond Heterojunction at High Temperatures

Frontiers in Chemistry, 2020
In the present study, an n-ZnO nanorods (NRs)/p-degenerated diamond tunneling diode was investigated with regards to its temperature-dependent negative differential resistance (NDR) properties and carrier tunneling injection behaviors.
Dandan Sang, Jiaoli Liu, Xiaofeng Wang, Dong Zhang, Feng Ke, Haiquan Hu, Wenjun Wang, Bingyuan Zhang, Hongdong Li, Bo Liu, Qinglin Wang   +10 more
doaj   +1 more source

Scalable manufacture of vertical p‐GaN/n‐SnO2 heterostructure for self‐powered ultraviolet photodetector, solar cell and dual‐color light emitting diode

InfoMat, 2021
Vertical SnO2 based p‐n junctions are pivotal since they built the core components in photoelectronic systems. Nevertheless, preparation of high‐quality p‐SnO2 with controllable hole mobility and concentration is still a great challenge owing to the self‐
Longxing Su, Yuqing Zuo, Jin Xie
doaj   +1 more source