The Role of Grain Boundaries in Perovskite Solar Cells

By Andrés-Felipe Castro-Méndez, Juanita Hidalgo, Juan‐Pablo Correa‐Baena. Advanced Energy Materials, 2019

246 citations recorded by the source corpus.

Grain boundaries (GBs) play an important role in most polycrystalline solar cells. In perovskite solar cells, the research community is just starting to understand their effects on performance and long‐term durability. In this essay, three important questions are explored: Do GBs affect: 1) recombination and thus open‐circuit voltage? Not dramatically, if at all; 2) current–voltage hysteresis? Most studies show that hysteresis is dominated by defects at GBs; and 3) long‐term durability? Yes, GBs definitely help increase the rate of perovskite degradation. In this essay, the latest reports are summarized and the authors' perspective on this very important subject is given.

Subfields: Electrical and Electronic Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/567e24dff1c4794da53e6d45a2a26b50cb95cfb2