Results 81 to 90 of about 2,838 (205)
Heavy‐metal‐free chalcogenide nanocrystals are a nontoxic alternative for next‐generation optoelectronic applications. This review provides a comprehensive overview of their unique optical properties, surface chemistry, and their performance in photodetectors, solar cells, light‐emitting diodes, and photocatalytic systems.
Apurba Mahapatra +7 more
wiley +1 more source
Cadmium‐Free Kesterite Thin‐Film Solar Cells with High Efficiency Approaching 12%
Cadmium sulfide (CdS) buffer layer is commonly used in Kesterite Cu2ZnSn(S,Se)4 (CZTSSe) thin film solar cells. However, the toxicity of Cadmium (Cd) and perilous waste, which is generated during the deposition process (chemical bath deposition), and the
Nafees Ahmad +11 more
doaj +1 more source
Back and front contacts in kesterite solar cells state of the art and open questions [PDF]
We review the present state of the art within back and front contacts in kesterite thin film solar cells, as well as the current challenges. At the back contact, molybdenum Mo is generally used, and thick Mo S, Se 2 films of up to several hundred ...
Heo, J. +37 more
core +1 more source
Kesterite (Cu2ZnSn(S,Se)4) solar cells are an alternative thin film technology to CuInxGa(1-x)Se2 (CIGS) or CdTe, which possess the ability to reduce costs due to the constituent elements all being earth abundant.
Jamie Lowe (2881316)
core +1 more source
Advances in Thermoelectric Cu2ZnSnS4: From Structure, Synthesis to Performance
ABSTRACT Thermoelectric technology has the capacity to directly convert waste heat into electricity and vice versa. For a long time, Cu2ZnSnS4 (CZTS) has been extensively researched in the domains of solar cells and photocatalysis due to its exceptional photovoltaic properties, but its wide bandgap prevents it from being favored in thermoelectrics ...
Xiaojun Li +3 more
wiley +1 more source
Cation Distribution in Li2CaSiO4:Gd, Pr, Na Uncovered Through Anomalous Diffraction
Li2CaSiO4 co‐doped with Gd3+ and Pr3+ shows strong blue‐to‐UV‐B up‐conversion. Herein, we explore the doping element distribution in order to discern the reason for the strongly supportive co‐doping effect using high‐resolution Rietveld refinement and multiple‐edge anomalous dispersion measurements.
Christoph Rick +4 more
wiley +1 more source
Bulk samples of kesterite (Cu2ZnSnS4, CZTS) were produced by cold-pressing and sintering of CZTS powders obtained via reactive ball-milling. An increase in the Seebeck coefficient of more than 100 μV/K, almost doubling the expected value, is noticed
Eleonora Isotta +3 more
doaj +1 more source
Kesterite Cu2ZnSn(S,Se)4 (CZTSSe) is a promising candidate for photodetector (PD) applications thanks to its excellent optoelectronic properties. In this work, a green solution‐ processed spin coating and selenization‐processed thermodynamic or kinetic ...
Guang‐Xing Liang +11 more
doaj +1 more source
When Cubic is Not Isotropic: Phonon–Exciton Decoupling in CuInSnS4 Single Crystals
A cubic CuInSnS4 crystal does not fully play by cubic rules. While phonons follow the average iso‐tropic lattice symmetry, the disorder‐localized excitons break away, showing strong, and reproduci‐ble polarization‐dependent emission. This work shows how intrinsic cation disorder can turn a mac‐roscopically cubic material into a source of hidden ...
Lara Kim Linke +11 more
wiley +1 more source
Ag‐Promoted Na Retention for Synergistic Defect Passivation in Kesterite Solar Cells
A synergistic Ag–Na codoping strategy in solution‐processed kesterite solar cells enables simultaneous lattice ordering and defect passivation. Ag promotes grain growth and Na retention, while Na enhances carrier concentration and reduces recombination.
Outman El Khouja +14 more
wiley +1 more source

