6 research outputs found
Improving health promotion through central rating of interventions: the need for Responsive Guidance.
In several countries, attempts are made to improve health promotion by centrally rating the effectiveness of health promotion interventions. The Dutch Effectiveness Rating System (ERS) for health promotion interventions is an improvement-oriented approach in which multi-disciplinary expert committees rate available health promotion interventions as 'theoretically sound', 'probably effective' or 'proven effective'. The aim of this study is to explore the functioning of the ERS and the perspective of researchers, policy-makers and practitioners regarding its contribution to improvement
Correction: Improving health promotion through central rating of interventions: The need for Responsive Guidance
__Correction:__ It has been highlighted that the original manuscript [1] contains a typesetting error in the surname of Caspar David Roelofs.
This was incorrectly captured as Caspar David Roelefs in the original manuscript which has since been updated
Formation of Cu-Rich and Sn-Poor CZTSSe via Cu<sub>3</sub>Sn(S,Se)<sub>4</sub>‑ZnS Solid-Solution as the Intermediate
In Cu<sub>2</sub>ZnSn(S,Se)<sub>4</sub> (CZTSSe) thin film solar
cells, it is commonly accepted that a Cu-poor and Zn-rich composition
is required for high-efficiency devices. However, the finding from
our nanoparticle-derived CZTSSe photovoltaic (PV) devices challenges
this belief. Despite starting with a Cu-poor and Zn-rich nanoparticle
precursor film, STEM-EDS compositional analysis of the photoactive
large-grain layer in our high-efficiency CZTSSe thin film PV devices
revealed a surprising Cu-rich and Sn-poor composition. Multiple approaches
were employed to confirm the Cu-rich and Sn-poor composition determined
by STEM-EDS. In order to understand why the large-grain layer in our
nanoparticle-derived CZTSSe thin films is Cu-rich and Sn-poor, a detailed
investigation of the formation mechanism of the bilayer CZTSSe thin
film was undertaken by tracking the evolution of the microstructure,
crystalline phases, and composition of annealed precursor films ex
situ. From this mechanistic study, we found an intermediate phase
is formed on top of the precursor films at temperatures as low as
450 °C. STEM-EDS analysis of the intermediate phase reveals an
interesting composition that appears to be a solid-solution between
Cu<sub>3</sub>Sn(S,Se)<sub>4</sub> and ZnS, i.e. Cu<sub>3</sub>Sn(S,Se)<sub>4</sub>-ZnS. We propose that during the high-temperature annealing
step, the Cu<sub>3</sub>Sn(S,Se)<sub>4</sub>-ZnS intermediates lead
to the formation of the densely packed Cu-rich and Sn-poor CZTSSe
large-grain layer