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Enhancing Charge Transport Performance of Perovskite Solar Cells by Using Reduced Graphene Oxide-cysteine/nanogold Hybrid Material in the Active Layer by Zhong-En Shi; Shu-Hao Liu; Chih-Hung Tsai; Chia-Wei Li; Chih-Ping Chen; Yuan-Hsiang Yu is a Materials Science article available to read on EtoBox.

What is Enhancing Charge Transport Performance of Perovskite Solar Cells by Using Reduced Graphene Oxide-cysteine/nanogold Hybrid Material in the Active Layer about?

To enhance carrier transport, the internal charge transfer resistance of organic–inorganic metal halide perovskite solar cells (PVSCs) was reduced through the formation of well-distributed nanogold-graphene–based conductive networks in the matrix of the active layer. In this study, a reduced graphene oxide-cysteine/nanogold (rGO-CysAu) hybrid material was prepared and incorporated into PVSCs. Nanogold particles were modified with the amino acid cysteine and successfully deposited onto the surface of graphene oxide. To prepare inverted PVSCs, rGO-CysAu with a highly uniform distribution of gold nanoparticles on the rGO surface was added to the perovskite precursor solution. The incorporation of rGO-CysAu into PVSCs resulted in a 12% increase in power conversion efficiency, improving perovskite charge transport efficiency and crystallization. Consequently, PVSCs with rGO-CysAu had improved average efficiency of 20.59% compared to 18.32% for control cells.

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Author

Zhong-En Shi; Shu-Hao Liu; Chih-Hung Tsai; Chia-Wei Li; Chih-Ping Chen; Yuan-Hsiang Yu

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Materials Science (Physical Sciences)