Results 61 to 70 of about 709 (218)

Extremely Long Electron Lifetime in Spontaneously Passivated Polycrystalline Perovskite Layers via Illumination‐Assisted Trap Filling

Advanced Functional Materials, EarlyView.
ABSTRACT Perovskite solar cells (PSCs) are promising next‐generation photovoltaics. The high performance of PSCs is attributed to the long carrier lifetimes of perovskite photoabsorbers. However, the carrier lifetimes of polycrystalline perovskite layers, which serve as the photoabsorbers in practical PSCs, have remained limited to several tens of ...
Naoyuki Nishimura, Ryuzi Katoh, Takurou N. Murakami   +2 more
wiley   +1 more source

Passivation strategies in lead-free perovskite solar cells: Towards efficient and stable photovoltaic devices

Energy Nexus
The development of perovskite solar cells (PSCs) technology has been accelerating tremendously over the past decade. With the recent approved world-record power conversion efficiency (PCE) of PSCs of 27 %, perovskites have become the first solution ...
Aasim Ahmed Abdelghafar, Ayman Mdallal, Mohamed Adel Allam, Hamad Al Ali, Abdul Hai Alami, Mohammad Ali Abdelkareem, A.G. Olabi   +6 more
doaj   +1 more source

Room‐Temperature Synthesis of Strongly Confined Lead Halide Perovskite Quantum Dots

Advanced Functional Materials, EarlyView.
CsPbX3${\rm CsPbX}_3$ lead halide perovskite quantum dots (QDs) are synthesized in a room‐temperature, five‐minute synthesis, yielding size‐controlled QDs with bright, tunable emission governed by reaction conditions and halide composition. A strongly binding ligand, OD‐PEA, ensures months‐long stability under ambient conditions and facilitates their ...
Anna Abfalterer, Yuzhen J. Zhou, Roshini Jayabalan, Julian Holzinger, Lukas M. Rescher, Rik Hooijer, Aladin Ullrich, Nina A. Henke, Immanuel Plangger, Erkan Aydin, Bert Nickel, Anne K. Schütz, Wolfgang Brütting, Alexander S. Urban   +13 more
wiley   +1 more source

Impact of pixel scaling and dual-layer passivation on the electro-optical characteristics of AlGaInP-based red µ-RCLEDs for high-speed optical communication

Results in Engineering
The influence of pixel scaling and dual-layer surface passivation on the electro-optical characteristics of AlGaInP-based red-emitting micro-resonant cavity light-emitting diode (µ-RCLED) was systematically examined.
Wei-Hsiang Chiang, Yu-Chih Hsu, Po-An Yang, Jun-Wei Chen, Shiang-Jiun Lo, Anoop Kumar Singh, Po-Kai Kung, Po-Liang Liu, Hsin-Yu Chou, Dong-Sing Wuu   +9 more
doaj   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Eliminating Resistance–Capacitance Coupling Shielding for Depicting the Defect Landscape in Perovskite Solar Cells by Capacitance Spectroscopy

Advanced Science
Capacitance spectroscopy techniques have been widely utilized to evaluate the defect properties in perovskites, which contribute to the efficiency and operation stability development for perovskite solar cells (PSCs). Yet the interplay between the charge
Biao Li, Daoyong Zhang, Zhenyi Ni, Pengjie Hang, Yuxin Yao, Chenxia Kan, Xuegong Yu, Deren Yang   +7 more
doaj   +1 more source

Versatile Pneumatic Twisted Coiled Actuators Enabled by Fiber‐Polymer Composite Fabrication

Advanced Functional Materials, EarlyView.
This work reports composite Pneumatic Twisted Coiled Actuators with embedded Kevlar fibers that convert pneumatic or hydraulic pressure into powerful linear motion. A novel precise manufacturing technique is used to systematically explore how design variables influence actuator mechanics and dynamics.
William J. Townsend, Jeongmin Kim, Samuel Tsai, Yichao Shi, Sameh Tawfick, James H. Pikul   +5 more
wiley   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

Advanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou, Tingjun Zhong, Sijie Liu, Pouya Nosratkhah, Ke Xu, Yuzhen Zhao, Kristiaan Neyts   +6 more
wiley   +1 more source

Steady-state and time-resolved spectroscopic techniques for investigating defect states in perovskite photovoltaics

Materials Futures
Perovskite solar cells (PSCs) have gained substantial attention due to rapidly increasing efficiencies and potential advantages, such as tunable bandgaps and low processing costs.
Zhuoqiong Zhang, Yichang Yin, Tianhua Ren, Weng Fu Io, Hua Yu, Yunfan Wang, Mingcong Wang, Tanghao Liu   +7 more
doaj   +1 more source

Magnesium‐Based Transient Bioelectronics, Bio‐Optics and Bio‐Scaffolds

Advanced Functional Materials, EarlyView.
This paper reviews the state of the art and recent advances in magnesium‐based thin‐film, foils, and scaffolds for applications in transient bio‐optics, bioelectronics and tissue engineering. The design principles, fabrication methods, material properties, and integration strategies are discussed in detail.
Massimo Mariello, Yves Leterrier
wiley   +1 more source