O'Shea Scanlan, Niamh (2022) Examining the effect of Bromide as an additive for Tin-Triiodide Perovskite Thin Films. Bachelor's Thesis, Applied Physics.
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Abstract
Sn-perovskites are recently being considered as an alternative to toxic Pb-perovskites for use in solar cells but are failing to offer similarly high efficiencies. The use of additives can improve its performance, where SnF2 is commonly used. However, SnF2 can cause phase separation so this study examines the effects of adding various concentrations of the additive SnBr2 to a tin-based perovskite formamidinium triiodide (FASnI3) for use in hot carrier solar cells. FASnI3 has shown to have long lived hot carrier light emission which contributes to higher solar cells efficiencies in an attempt to exceed the Shockley-Queisser limit. It was found that although hot-carrier emission was present in the samples with SnBr2, the additive did not significantly improve performance and material quality of the perovskite. The photoluminescence, absorption spectra, scanning tunneling microscopy, and X-ray diffraction were examined to determine the material quality of each sample and it was found that the hot carrier lifetime was shortened by the additive both in the 3D and 2D/3D regimes.
| Item Type: | Thesis (Bachelor's Thesis) |
|---|---|
| Supervisor name: | Loi, M.A. and Koster, L.J.A. and Tekelenburg, E.K. |
| Degree programme: | Applied Physics |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 06 Oct 2022 10:49 |
| Last Modified: | 06 Oct 2022 10:49 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/28814 |
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