Ultra-high open-circuit voltage of perovskite solar cells induced by nucleation thermodynamics on rough substrates.

ABSTRACT: To obtain high performance CH₃NH₃PbI₃ perovskite solar cells, it is highly important to realise a high open-circuit voltage. Calculation results based on a modified diode model have indicated that a low bare ratio ϕ of the perovskite film is the most important factor determining the open-circuit voltage, where ϕ is defined as the ratio of the projection of the uncovered area of the perovskite film to the apparent area of the total substrate surface. To realise a low ϕ, we investigate the nucleation behaviour of crystals on rough substrates. The analysis results predict that, when CH₃NH₃PbI₃ is deposited on conventional transparent conductive oxide substrates such as fluorine-doped tin oxide, preferential heterogeneous nuclea

SUBMITTER: Li Y 

PROVIDER: S-EPMC5388881 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature