Qian Shen

TL;DR: In this paper, it was shown that the presence of unreacted PbI2 results in an intrinsic instability of the perovskite film under illumination, leading to the film degradation under inert atmosphere and faster degradation upon exposure to illumination and humidity.

TL;DR: Investigation on the influences of post-deposition treatments on the performance of solution-processed methylammonium lead triiodide (CH3NH3PbI3)-based planar solar cells finds that annealing in O2 leads to substantial increase in the power conversion efficiencies (PCEs) of the devices.

TL;DR: In this article, thermal annealing of evaporated lead(II) iodide (PbI2)/methylammonium iodide(CH3NH3I) multilayers was used for the synthesis of perovskite films.

TL;DR: It is found that the growth ambient and degree of crystallization of CH3NH3PbI3 (MAPI) have strong impact on the defect density of MAPI, and HCVD process with slow postdeposition cooling rate can significantly reduce the density of shallow and deep traps in the MAPI.

TL;DR: From the experimental impedance spectroscopy results, it is found that the addition of AuNPs had little effect on the electrical properties of the device, and the device performance is found to be sensitive to the concentration and morphology of the AuNps.