Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 6, Issue 1, Pages 129-138Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jz502367k
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Funding
- EPSRC
- Oxford Photovoltaics Ltd. through a Nanotechnology KTN CASE award
- European Research Council (ERC) HYPER PROJECT [279881]
- Engineering and Physical Sciences Research Council [1511477, EP/G049653/1] Funding Source: researchfish
- European Research Council (ERC) [279881] Funding Source: European Research Council (ERC)
- EPSRC [EP/G049653/1, EP/I019278/1] Funding Source: UKRI
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Efficient, neutral-colored semitransparent solar cells are of commercial interest for incorporation into the windows and surfaces of buildings and automobiles. Here, we report on semitransparent perovskite solar cells that are both efficient and neutral-colored, even in full working devices. Using the microstructured architecture previously developed, we achieve higher efficiencies by replacing methylammonium lead iodide perovskite with formamidinium lead iodide. Current voltage hysteresis is also much reduced. Furthermore, we apply a novel transparent cathode to the devices, enabling us to fabricate neutral-colored semitransparent full solar cells for the first time. Such devices demonstrate over 5% power conversion efficiency for average visible transparencies of almost 30%, retaining impressive color-neutrality. This makes these devices the best-performing single-junction neutral-colored semitransparent solar cells to date. These microstructured perovskite solar cells are shown to have a significant advantage over silicon solar cells in terms of performance at high incident angles of sunlight, making them ideal for building integration.
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