Results 71 to 80 of about 2,838 (205)

Heavy‐Metal‐Free Colloidal Quantum Dots for Photocatalysis

open access: yesSmall, EarlyView.
Heavy‐metal‐free colloidal quantum dots provide sustainable photocatalytic platforms by combining tunable band structures, strong light absorption, and programmable surfaces/interfaces. This Review highlights how core/shell engineering, alloying, defect regulation, ligand design, and hybrid‐interface construction direct charge separation and ...
Xintong Xu, Ge Yang, Qin Li, Dechao Chen
wiley   +1 more source

Polarized Raman scattering study of kesterite type Cu2 ZnSnS4 single crystals [PDF]

open access: yes, 2016
A non-destructive Raman spectroscopy has been widely used as a complimentary method to X-ray diffraction characterization of Cu2 ZnSnS4 (CZTS) thin films, yet our knowledge of the Raman active fundamental modes in this material is far from complete ...
Bodnar, Ivan V.   +7 more
core  

Size and shape controlled hydrothermal synthesis of kesterite Cu2ZnSnS4 nanocrystals

open access: yes, 2018
Quaternary kesterite Cu2ZnSnS4 (CZTS) nanocrystals (NCs) have been synthesized using a simple, size and shape tunable, and low-cost hydrothermal technique without using toxic chemicals.
Bae, WR   +10 more
core   +1 more source

Stepwise Pre‐Treatment Enables Tunable Phase Evolution for High‐Efficiency Co‐Evaporated and Sulfurized Cu2ZnSnS4 Solar Cells

open access: yesSusMat, EarlyView.
A stepwise pre‐treatment strategy combining pre‐alloying and pre‐sulfurization regulates the phase‐evolution kinetics of co‐evaporated CZTS absorbers. The engineered intermediate phases promote direct kesterite crystallization, suppress defects and nonradiative recombination, and deliver a power conversion efficiency of 10.62%, representing the highest
Jiahui Zhou   +9 more
wiley   +1 more source

Partial and Total Substitution of Zn by Mg in the Cu2ZnSnS4 Structure

open access: yesCrystals, 2020
Cu 2 ZnSnS 4 (CZTS) is a quaternary semiconductor that has emerged as a promising component in solar absorber materials due to its excellent optical properties such as band-gap energy of ca. 1.5 eV and significant absorption coefficient in
Diana M. Mena Romero   +2 more
doaj   +1 more source

Effect of the ZnSnO/AZO Interface on the Charge Extraction in Cd-Free Kesterite Solar Cells

open access: yesEnergies, 2023
Cu2ZnSnS4 (CZTS) is a promising absorber material to produce thin film solar cells thanks to its high absorption coefficient, low cost and low toxicity.
Carla Gobbo   +9 more
doaj   +1 more source

Identifying the relationships between subsurface absorber defects and the characteristics of kesterite solar cells

open access: yesCarbon Energy, 2023
Understanding the defect characteristics that occur near the space‐charge regions (SCRs) of kesterite (CZTSSe) solar cells is important because the recombination loss at the CZTSSe/CdS interface is considered the main cause of their low efficiency ...
Dae‐Ho Son   +9 more
doaj   +1 more source

Experimentally Determined Spatiotemporal Charge Carrier Dynamics for the Development of Particulate Photocatalysts

open access: yesAdvanced Energy Materials, Volume 16, Issue 38, 14 October 2026.
This review looks at the different experimental techniques that measure spatiotemporal charge carrier dynamics. This information is viewed in the context of particulate photocatalysts, outlining the insights these techniques provide and how they advance our understanding.
Sutripto Khasnabis, Robert Godin
wiley   +1 more source

Modified Back Contact Interface of CZTSe Thin Film Solar Cells: Elimination of Double Layer Distribution in Absorber Layer

open access: yesAdvanced Science, 2018
Double layer distribution exists in Cu2SnZnSe4 (CZTSe) thin films prepared by selenizing the metallic precursors, which will degrade the back contact of Mo substrate to absorber layer and thus suppressing the performance of solar cell.
Zhaojing Zhang   +11 more
doaj   +1 more source

Atomic Scale Structure of (Ag,Cu)2ZnSnSe4 and Cu2Zn(Sn,Ge)Se4 Kesterite Thin Films

open access: yesFrontiers in Energy Research, 2021
Kesterite based materials are being researched and developed as affordable, efficient, and mechanically flexible absorber materials for thin film photovoltaics.
Konrad Ritter   +13 more
doaj   +1 more source

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