Journal
SOLAR RRL
Volume 4, Issue 2, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.201900257
Keywords
efficiency; interface engineering; perovskite solar cells; stability
Funding
- National Natural Science Foundation of China [51672094, 51861145404, 51661135023]
- Self-Determined and Innovative Research Funds of HUST [2016JCTD111, 2018KFYRCPY003]
- Shenzhen Science and Technology Innovation Committee [JCYJ20170307165905513, JCYJ20180507182257563]
- Natural Science Foundation of Guangdong Province [2017A030313342]
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Exceptionally high efficiencies for organic-inorganic hybrid perovskite solar cells (PSCs) have been achieved. However, their operational stability still needs to be improved. The intrinsic instability of halide perovskites caused by the presence of volatile organic cations, as well as the degradation of hybrid perovskites induced by the adverse permeation of environmental water (H2O)/oxygen (O-2) and the undesired ion diffusion or migration are the major reasons. Beyond strengthening perovskites themselves, interface engineering is now regarded as a valid strategy to prolong device lifetime by preventing the undesired degradation pathways. This comprehensive review highlights the utilization of practical interface engineering for enhancing the efficiency and stability of organic-inorganic lead halide PSCs. First, the impacts of interface design on the energy-level alignment and carrier dynamics are overviewed. Second, recent progresses on the development of interfacial materials for simultaneously achieving high efficiency and stability of PSCs are summarized. At last, the interfacial layer design principles along with future outlook of this rapidly developing field are discussed.
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