In this work, BiVO4/Bi-X (X represented the quality of adding NaNH4, X = 0.1, 0.3 and 0.5) are synthesized through two-step hydrothermal methods. The photoelectrochemical (PEC) experiments demonstrate that the PEC properties of BiVO4/Bi-0.3 bear the best PEC performance compared with other materials. Meanwhile, UV–vis Diffuse reflection spectra (DRS) and photoluminescence (PL) also affirm that the Bi metal SPR effect is able to improve the energy conversion efficiency. For this reason, the PEC sensors based on a bifunctional BiVO4/Bi-0.3 are fabricated, which demonstrates a broad linear range from 0.2–118 μM and 0.05–100 μM for sensing ascorbic acid (AA) and Dopamine (DA).

This paper mainly studied the correlation between the PID attenuation of P/N type bifacial cell and the adhesive film. At present, with the development of glass-glass module technology and bifacial cell technology, glass-glass bifacial module is an important direction of industry development. Currently P type monocrystal PERC bifacial cell and N-type PERT bifacial cell are typical representatives of the bifacial technology. However, the PID problem of bifacial cell is more serious than single side cell. How to solve the bifacial cell PID problem has become a hot topic. We mainly studied the correlation between two different adhesive film (EVA&POE), and the anti-pid attenuation ability of P/N type bifacial cell. The influence of the water vapor transmission rate and resistivity of the adhesive film on PID attenuation of bifacial cell was studied. After PID 192h test, For P type, power decay of the front side is lower than rear side, while for N type cell, power dacy of the rear side is lower than front side. Both P&N type bifacial cell module with POE are much better than with EVA. For POE, recipe adjustment affects PID performance obviously.

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