Liu, Guiju published the artcileIntegration of photoelectrochemical devices and luminescent solar concentrators based on giant quantum dots for highly stable hydrogen generation, Synthetic Route of 142-90-5, the main research area is photoelectrochem cell luminescent solar concentrator quantum dot hydrogen evolution; cadmium sulfide selenide quantum dot photosensitizer hydrogen evolution photostability.
Hydrogen generation from water under sunlight illumination is the key to construct a sustainable and clean energy system. To date, the long-term stability of photoanodes based on colloidal quantum dots (QDs) for hydrogen generation remains a major challenge due to the degradation of the QDs and hole accumulation. The degradation is usually caused by the self-oxidation of QDs induced by UV radiation. Here, we propose a concept of integrating a luminescent solar concentrator (LSC) with a photoelectrochem. (PEC) cell into a standalone device to improve the stability of the PEC device for hydrogen generation by avoiding direct irradiation of UV light on PEC devices. In this study, CdSe/(CdSxSe1-x)5/CdS core/multi-shell QDs were used as a photosensitizer. The PEC device based on alloyed multi-shell QDs shows a saturated photocurrent d. of 11.5 mA cm-2 and maintains â?6.2% of its initial value after 23 h of sunlight illumination (100 mW cm-2). PEC devices based on QDs coupled with an LSC exhibit a saturated photocurrent d. of 1.2 mA cm-2, and â?4.6% of its initial value was retained after 23 h of continuous illumination, indicating a 420% enhancement compared to a PEC device alone. This finding proves a unique concept to improve the photo-stability of PEC devices by coupling with an LSC.
Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Core-shell materials. 142-90-5 belongs to class esters-buliding-blocks, name is Dodecyl 2-methylacrylate, and the molecular formula is C16H30O2, Synthetic Route of 142-90-5.
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