Approximately 800-nm-Thick Pinhole-Free Perovskite Films via Facile Solvent Retarding Process for Efficient Planar Solar Cells
2016 (English)In: ACS APPLIED MATERIALS and INTERFACES, ISSN 1944-8244, Vol. 8, no 50, 34446-34454 p.Article in journal (Refereed) Published
Device performance of organometal halide perovskite solar cells significantly depends on the quality and thickness of perovskite absorber films. However, conventional deposition methods often generate pinholes within similar to 300 nm-thick perovskite films, which are detrimental to the large area device manufacture. Here we demonstrated a simple solvent retarding process to deposit uniform pinhole free perovskite films with thicknesses up to similar to 800 nm. Solvent evaporation during the retarding process facilitated the components separation in the mixed halide perovskite precursors, and hence the final films exhibited pinhole free morphology and large grain sizes. In addition, the increased precursor concentration after solvent-retarding process led to thick perovskite films. Based on the uniform and thick perovskite films prepared by this convenient process, a champion device efficiency up to 16.8% was achieved. We believe that this simple deposition procedure for high quality perovskite films around micrometer thickness has a great potential in the application of large area perovskite solar cells and other optoelectronic devices.
Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2016. Vol. 8, no 50, 34446-34454 p.
perovskite solar cells; solvent retarding; crystallization; components separation; film thickness
IdentifiersURN: urn:nbn:se:liu:diva-134078DOI: 10.1021/acsami.6b12637ISI: 000390728900033PubMedID: 27998146OAI: oai:DiVA.org:liu-134078DiVA: diva2:1068903
Funding Agencies|National Key Research and Development Program of China [2016YFA0202402]; National Natural Science Foundation of China ; Priority Academic Program Development of Jiangsu Higher Education Institutions; Natural Science Foundation of Jiangsu Province of China [BK20130310]; Collaborative Innovation Center of Suzhou Nano Science and Technology; Swedish Research Councils (VR) [330-2014-6433]; Swedish Research Councils (FORMAS) [942-2015-1253]; Carl Tryggers Stiftelse; European Commission Marie Sklodowska-Curie Actions [691210, INCA 600398]; China Scholarship Council2017-01-262017-01-222017-03-07