Results 61 to 70 of about 53,881 (207)

20%-efficient polycrystalline Cd(Se,Te) thin-film solar cells with compositional gradient near the front junction

open access: yesNature Communications, 2022
Bandgap gradient is a promising approach to improve the open-circuit voltage in thin film solar cells. Here, authors incorporate a Cd(O,S,Se,Te) region to realize the bandgap gradient at front interface and demonstrate Cd(Se,Te) solar cells with reduced ...
Deng-Bing Li   +13 more
doaj   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

One‐Step Formation of Low Work‐Function, Transparent and Conductive MgFxOy Electron Extraction for Silicon Solar Cells

open access: yesAdvanced Science, 2022
The development of high‐performance dopant‐free silicon solar cells is severely bottlenecked by opaque electron selective contact. In this paper, high transmittance (80.5% on glass) and low work function (2.92 eV) lithium fluoride (LiFx)/MgFxOy electron ...
Junjun Li   +12 more
doaj   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

open access: yesAdvanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain   +5 more
wiley   +1 more source

Pnictogen-halide semiconductors for photovoltaics [PDF]

open access: yes
Indoor photovoltaic (IPV) development has garnered increasing interest in recent years because of the potential to sustainably provide energy to the billions of autonomous devices part of the Internet of Things (IoT) ecosystem.
Liu, Pengjun
core   +1 more source

In-situ investigation of the order-disorder transition in Cu2ZnSnSe4 by optical transmission spectroscopy

open access: yesAIP Advances, 2017
The existence of disorder is one possible reason for the limited performance of kesterite solar cells. Therefore further knowledge of the order-disorder phase transition, of factors which influence the degree of order and of methods to determine this ...
Christiane Stroth   +6 more
doaj   +1 more source

Sub‐Nanometer Curvature Unlocks Quantum Orbital Flexoelectricity in Graphene

open access: yesAdvanced Materials, EarlyView.
In self‐assembled, reproducible, large‐area, quasi‐pristine graphene nanowrinkles, extreme curvature forces out‐of‐plane π‐electrons toward hybridization, driving a transition from classical to quantum orbital flexoelectricity. As curvature approaches the fundamental physical limit set by the C─C bond length, the resulting polarization increases by ...
Sathvik Ajay Iyengar   +8 more
wiley   +1 more source

Integrating Direct Air Capture Technology and Plasma Based Calcination for Sustainable Syngas and Concrete – An Experimental Investigation

open access: yesAdvanced Materials Interfaces
The persistent reliance of the cement sector on fossil fuels for CaO production and the high energy demand for DAC sorbent regeneration pose a significant barrier to reaching sustainable industrial production. Herein, a novel process concept is presented,
Valentin Benedikt Seithümmer   +5 more
doaj   +1 more source

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

open access: yesAdvanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally   +2 more
wiley   +1 more source

Effect of top cell absorber thickness and bifacial illumination on monolithic (Ag,Cu)(In,Ga)Se2/Si tandem solar cells

open access: yesJPhys Energy
Wide bandgap (Ag,Cu)(In,Ga)Se _2 (ACIGSe) is a viable candidate as top cell absorber in tandem devices. In this work, we investigate monolithic two-terminal ACIGSe-Si tandem cells with a bandgap of 1.5 eV.
Julia Horstmann   +5 more
doaj   +1 more source

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