# MAPI–MoS2 quantum dot composite films as active layers for efficient photovoltaics

## TL;DR

Researchers combined MoS2 quantum dots with MAPI to improve solar cell efficiency by enhancing absorption and charge transport.

## Contribution

A novel composite material using MoS2 quantum dots and MAPI is introduced to enhance photovoltaic performance.

## Key findings

- MoS2 quantum dots improve absorption and charge transport in MAPI-based solar cells.
- Efficiency increases by 14% and 28% in devices with MoS2 quantum dots.
- Quantum dots help passivate defects at MAPI grain interfaces.

## Abstract

In this work we have incorporated MoS2 quantum dots having outstanding optoelectronic properties with methyl ammonium lead iodide (MAPI) to form a composite absorber material for photovoltaic applications. The inclusion of MoS2 quantum dots in the perovskite layer improves the absorption and charge transport properties of the active layer, in part due to the quantum dots contributing to defect passivation at the MAPI grain interfaces. The photocurrent density increases when the MoS2 quantum dots are introduced in the device structure, resulting in efficiency improvements of 14% and 28% for devices fabricated in different laboratories.

In this work we have incorporated MoS2 quantum dots having outstanding optoelectronic properties with methyl ammonium lead iodide (MAPI) to form a composite absorber material for photovoltaic applications.