Results 141 to 150 of about 7,216,557 (390)

Recent Advances in Wide‐Bandgap Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Ubiquitous defects predominately account for photo‐instability and open‐circuit voltage losses in wide‐bandgap perovskite solar cells (WBG PSCs). This review comprehensively presents the underlying impact mechanisms, summarizes the advanced optimization strategies across various functional layers and their interfaces to develop efficient and stable WBG
Jianjun Mei, Feng Yan
wiley   +1 more source

Is There Migration-Related Inequity in Access to or in the Utilisation of Health Care in Germany? [PDF]

open access: yes
This paper analyses immigrants' access to health care and utilisation of health care services in Germany. Thereby, it is investigated if there is inequity in access to or in the utilisation of health care services due to a lack of language skills or due ...
Monika Sander
core  

The Use of Mother Tongue in General English Program for Teenagers in the Second and Fourth Levels [PDF]

open access: yes, 2014
This study reports the teacher's use of mother tongue (Bahasa Indonesia) in English as Foreign Language (EFL) classroom in Indonesia. The study was conducted in an English language course for teenagers, and focused more in the second and fourth level ...
Bawono, K. O. (Katherine)   +1 more
core  

Inorganic Dielectric Materials Coupling Micro‐/Nanoarchitectures for State‐of‐the‐Art Biomechanical‐to‐Electrical Energy Conversion Devices

open access: yesAdvanced Materials, EarlyView.
Biomechanical‐to‐electrical energy conversion devices are uniquely suited for self‐driven physiological information monitoring and powering human–computer interaction systems. These devices based on micro‐/nanoarchitectured inorganic dielectric materials (MNIDMs) have shown ultrahigh electromechanical performance and thus great potential for practical ...
Jia‐Han Zhang   +12 more
wiley   +1 more source

Becoming multilingual. Language learning and language policy between attitudes and identity [PDF]

open access: yes, 2011
Many studies on language attitudes have been based on an approach in which languages are examined as an isolated unit; in other words, in these studies the participants are asked about their attitudes towards each of the languages in contact ...
David, Lasagabaster, Sandro, Caruana
core   +1 more source

Structured Light Projection Using Image Guide Fibers for In Situ Photo‐biofabrication

open access: yesAdvanced Materials, EarlyView.
Light‐based biofabrication is typically performed with single wavelength light sources and within benchtop devices. This work demonstrates FaSt‐Light (Fiber‐assisted Structured Light) as a new approach to achieve multiwavelength image projection using flexible image guide fibers, which enables a variety of applications for in situ biofabrication ...
Parth Chansoria   +8 more
wiley   +1 more source

Halide Perovskite Photocatalysts for Clean Fuel Production and Organic Synthesis: Opportunities and Challenges

open access: yesAdvanced Materials, EarlyView.
This review provides the state‐of‐the‐art overview of halide perovskite‐based photocatalysts for hydrogen production from water and halogen acid solutions, CO2 reduction into value‐added chemicals, and organic chemical transformations. Different types of halide perovskite photocatalysts and their relative efficiencies for hydrogen generation and CO2 ...
Siddharth Singh   +8 more
wiley   +1 more source

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