biostudies-literatureUnknown6Moon SThere has been much interest in developing a thin-film solar cell because it is lightweight and flexible. The GaAs thin-film solar cell is a top contender in the thin-film solar cell market in that it has a high power conversion efficiency (PCE) compared to that of other thin-film solar cells. There are two common structures for the GaAs solar cell: n (emitter)-on-p (base) and p-on-n. The former performs better due to its high collection efficiency because the electron diffusion length of the p-type base region is much longer than the hole diffusion length of the n-type base region. However, it has been limited to fabricate highly efficient n-on-p single-junction GaAs thin film solar cell on a flexible substrate due to technical obstacles. We investigated a simple and fast epitaxial lift-oScientific reports30107https://www.ebi.ac.uk/biostudies/studies/S-EPMC4951801biostudies-literatureHighly efficient single-junction GaAs thin-film solar cell on flexible substrate.PMC4951801Moon SKim KLee JKim YHeo JfalseHighly efficient single-junction GaAs thin-film solar cell on flexible substrate.There has been much interest in developing a thin-film solar cell because it is lightweight and flexible. The GaAs thin-film solar cell is a top contender in the thin-film solar cell market in that it has a high power conversion efficiency (PCE) compared to that of other thin-film solar cells. There are two common structures for the GaAs solar cell: n (emitter)-on-p (base) and p-on-n. The former performs better due to its high collection efficiency because the electron diffusion length of the p-type base region is much longer than the hole diffusion length of the n-type base region. However, it has been limited to fabricate highly efficient n-on-p single-junction GaAs thin film solar cell on a flexible substrate due to technical obstacles. We investigated a simple and fast epitaxial lift-o2016-01-01T00:00:00Z2016 Jul2025-04-04T11:56:24.672Z2019-03-27T02:18:49ZS-EPMC49518012743589910.1038/srep30107