Results 71 to 80 of about 709 (218)

From Geometry to Function: Programmable Mechanical Response in 3D‐Printed Adipose‐Inspired Soft Metamaterials

Advanced Functional Materials, EarlyView.
Geometry‐driven design of soft cellular metamaterials is systematically investigated by combining experiments, finite element modeling, and statistical prediction. The study quantifies how unit cell geometry and material properties govern stiffness, instability, densification, and energy absorption.
Alice Berardo, Gianmarco Dolino, Damiano Coato, Paolo Gargiulo, Emanuele Luigi Carniel   +4 more
wiley   +1 more source

Atomic-level passivation mechanism of ammonium salts enabling highly efficient perovskite solar cells

Nature Communications, 2019
Various approaches have been developed to push higher the efficiency of halide perovskite solar cells. Here Alharbi et al. show that ammonium salts treatment can reduce the defect density at the perovskite surface and understand the passivation mechanism
Essa A. Alharbi, Ahmed Y. Alyamani, Dominik J. Kubicki, Alexander R. Uhl, Brennan J. Walder, Anwar Q. Alanazi, Jingshan Luo, Andrés Burgos-Caminal, Abdulrahman Albadri, Hamad Albrithen, Mohammad Hayal Alotaibi, Jacques-E. Moser, Shaik M. Zakeeruddin, Fabrizio Giordano, Lyndon Emsley, Michael Grätzel   +15 more
doaj   +1 more source

Biodegradable and Biocompatible Functional Polymers for Biomedical Applications

Advanced Functional Materials, EarlyView.
Biodegradable and biocompatible functional polymers integrate electrical, mechanical, and stimuli‐responsive functionalities while enabling programmed degradation under physiological conditions. This review introduces recent advances in conductive, shape‐memory, self‐healing, photocurable, and adhesive polymer systems, emphasizing material design ...
Won Bae Han, Shuvra Mondal, Sungkeun Han, Chan‐Hwi Eom, Venkata Ramesh Naganaboina, Suk‐Won Hwang   +5 more
wiley   +1 more source

Direct Channel Implantation of B and BF2 Ions for Functional Control of Oxygen Vacancies in Oxide Semiconductor Thin Film Transistors

Advanced Functional Materials, EarlyView.
Direct channel implantation of B and BF2 ions was employed to fabricate amorphous IGZO TFTs with improved electrical and stability properties. B and BF2 implantation modulate oxygen vacancies within the IGZO channel. The field‐effect mobility of ion‐implanted IGZO TFTs was enhanced as compared to pristine IGZO TFTs.
Beom Soo Kim, Jong Bin An, Seok Gyu Hong, Moon Ho Lee, Ju Hyun Lee, Ji Yeong Park, Hwa Seon Kim, I. Sak Lee, Kyungmoon Kwak, Hyun Jae Kim   +9 more
wiley   +1 more source

Diffusion‐Driven Targeted Passivation of Selenium Vacancies via an I‐Doped CdS Buffer Layer for Efficient Sb2Se3 Solar Cells

Advanced Science
Antimony selenide (Sb2Se3) is an emerging photovoltaic absorber with attractive optoelectronic properties, but its device performance is largely constrained by deep‐level defects, particularly selenium vacancies (VSe), which induce severe non‐radiative ...
Luyan Shen, Deyang Qin, Er Nie, Jiahua Tao, Hidefumi Akiyama, Junhao Chu, Shaoqiang Chen   +6 more
doaj   +1 more source

Multimode Oxide‐Based Optoelectronic Memtransistor for In‐Sensor Vision Processing

Advanced Functional Materials, EarlyView.
A multimode optoelectronic memtransistor (OEMT) is demonstrated for vision explainable artificial intelligence (VXAI) hardware. By integrating optical sensing, electrical masking, and non‐volatile memory, the device enables key operations required for generating saliency information.
Min Gu Lee, Geunyoung Kim, Hwa Young Kim, Do Hoon Kim, Hanchan Song, Huisu Noh, Jungwan Noh, Seungwoo Lee, Sang‐Hee Ko Park, Himchan Cho, Kyung Min Kim   +10 more
wiley   +1 more source

Passivation effects of atomic-layer-deposited aluminum oxide

EPJ Photovoltaics, 2013
Atomic-layer-deposited (ALD) aluminum oxide (Al2O3) has recently demonstrated an excellent surface passivation for both n- and p-type c-Si solar cells thanks to the presence of high negative fixed charges (Qf ~ 1012−1013 cm-2) in combination with a low ...
Kotipalli R., Delamare R., Poncelet O., Tang X., Francis L. A., Flandre D.   +5 more
doaj   +1 more source

Probing defects in 3D NAND flash memory with temperature-dependent leakage current [PDF]

AIP Advances
This study investigated the defect profiles of highly stacked 3D NAND flash memory using trap-assisted leakage current analysis. By extracting the activation energy (Ea), we examined leakage mechanisms under hydrogen (H) and fluorine (F) gas annealing ...
Donghyun Kim, Sae-In Bang, Ki Seok Heo, Seoyeon Choi, Jungchun Kim, Seunghee Jin, Minjung Kim, Eunmee Kwon, Jae Woo Lee   +8 more
doaj   +1 more source

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

Advanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu, Yi Zhao, Liming Cai, Simin Long, Jing Kang, Jingkai Lin, Jimin Shen, Zhonglin Chen, Shaobin Wang, Huayang Zhang   +9 more
wiley   +1 more source

Enhanced Si Passivation and PERC Solar Cell Efficiency by Atomic Layer Deposited Aluminum Oxide with Two-step Post Annealing

Nanoscale Research Letters, 2019
In this study, aluminum oxide (Al2O3) films were prepared by a spatial atomic layer deposition using deionized water and trimethylaluminum, followed by oxygen (O2), forming gas (FG), or two-step annealing.
Chia-Hsun Hsu, Yun-Shao Cho, Wan-Yu Wu, Shui-Yang Lien, Xiao-Ying Zhang, Wen-Zhang Zhu, Sam Zhang, Song-Yan Chen   +7 more
doaj   +1 more source