High Photon-to-Current Conversion in Solar Cells Based on Light-Absorbing Silver Bismuth Iodide.

ABSTRACT: Here, a lead-free silver bismuth iodide (AgI/BiI₃ ) with a crystal structure with space group R3‾ m is investigated for use in solar cells. Devices based on the silver bismuth iodide deposited from solution on top of TiO₂ and the conducting polymer poly(3-hexylthiophene-2,5-diyl) (P3HT) as a hole-transport layer are prepared and the photovoltaic performance is very promising with a power conversion efficiency over 2 %, which is higher than the performance of previously reported bismuth-halide materials for solar cells. Photocurrent generation is observed between 350 and 700 nm, and the maximum external quantum efficiency is around 45 %. The results are compared to solar cells based on the previously reported material AgBi₂ I₇ , and we observe a c

SUBMITTER: Zhu H 

PROVIDER: S-EPMC5499729 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature