Publications by authors named "P T Hang"
The instability of hybrid wide-bandgap (WBG) perovskite materials (with bandgap larger than 1.68 eV) still stands out as a major constraint for the commercialization of perovskite/silicon tandem photovoltaics, yet its correlation with the facet properties of WBG perovskites has not been revealed. Herein, we combine experiments and theoretical calculations to comprehensively understand the facet-dependent instability of WBG perovskites.
View Article and Find Full Text PDFArticle Synopsis
- Researchers have developed a method to create chiral polyaniline nanohelices (PANI NHs) with adjustable screw pitches and tilt angles by varying the amount of -camphorsulfonic acid, which acts as a chiral molecule inducer.
- These chiral nanohelices maintain a similar aspect ratio while allowing for a continuous range of chiral shapes, bridging the gap between discrete and tunable nanostructures.
- The study also reveals that PANI NHs enhanced with gold nanoparticles show improved catalytic performance in reactions, with greater helical twist correlating to higher activity and selectivity.
Background: While mallet finger remains a relatively common injury of the hand, mallet thumb is much rarer in occurrence. Mallet thumb management has been noted infrequently within the literature and reliable evidence regarding the most effective method of management remains absent. The aim of this review is to assess the quality of literature that exists pertaining to mallet thumb to determine whether conservative or surgical management is superior.
View Article and Find Full Text PDFTunnel oxide passivated contact (TOPCon) silicon solar cells are rising as a competitive photovoltaic technology, seamlessly blending high efficiency with cost-effectiveness and mass production capabilities. However, the numerous defects from the fragile silicon oxide/c-Si interface and the low field-effect passivation due to the inadequate boron in-diffusion in p-type polycrystalline silicon (poly-Si) passivated contact reduce their open-circuit voltages (Vs), impeding their widespread application in the promising perovskite/silicon tandem solar cells (TSCs) that hold a potential to break 30% module efficiency. To address this, we have developed a highly passivated p-type TOPCon structure by optimizing the oxidation conditions, boron in-diffusion, and aluminium oxide hydrogenation, thus pronouncedly improving the implied V (iV) of symmetric samples with p-type TOPCon structures on both sides to 715 mV and the V of completed double-sided TOPCon bottom cells to 710 mV.
View Article and Find Full Text PDF