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Organometal halide perovskite materials have shown high potential as light absorbers for photovoltaic applications. In this work, perovskite planar solar cells were fabricated on corning substrates with the structure as follows: the first layer made of tantalum-doped tin oxide as transparent contact material, followed by sputtering niobium-doped titanium oxide as the compact electron transport layer; covered with perovskite CH3NH3PbI3 as the light harvester by combination between spin-coating and dipping methods; CuSCN was evaporated as the hole transport layer; the final thin Al/Ag electrodes were deposited. This configuration is shortly described as Al/TTO/NTO/CH3NH3PbI3/CuSCN/Ag. Such heterojunctions are expected to be suitable for the development of efficient hybrid solar cells. The fabricated cells were measured under the air mass 1.5 illumination condition, showed the rectification effect and exhibited a power conversion efficiency of 0.007%, with a open circuit voltage of 53.2 mV, a short circuit current of 0.36 mA/cm2, and a form factor of 37%. The power conversion efficiency will be further optimized in near future.

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Type 2 diabetes (T2D) is caused by a combination of lifestyle and genetic factors. Physical activity (PA) is a key element in improving the HbA1c index and reducing the risk of complications in a patient with T2D. A descriptive crosssectional study was conducted on 629 outpatients with T2D at Hue Transportation Hospital to describe patients’ PA levels and some related factors. The results showed that there were 48% of participants achieved the WHO recommended level of PA. The multivariate logistic regression model identifed some factors associated with PA among the T2D patients, including age group (group aged 45-64 with OR = 1.55; 95% CI: 1.10 – 2.18), academic level (≥ high school level with OR = 1.79; 95%CI: 1.15 – 2.78), sleeping time (6 - 9 hours with OR = 1.86; 95% CI: 1.20 – 2.87), blood pressure (normal blood pressure with OR = 1.42; 95% CI: 1.02 – 1.99) and HbA1c (< 7% with OR = 1.43; 95%CI: 1.03 – 1.99). The proportion of patients meeting the recommended PA level was low, making it crucial to strengthen education about the health benefts of doing PAs for diabetic patients.