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High-PerformancenPerovskite Solar Cells Based on NaCsWO3@ NaYF4@NaYF4:Yb,Er Upconversion Nanoparticles 基于nacsw &lt；sub>3@ NaYF4@NaYF4; Yb，Er上转换纳米粒子的高性能 n钙钛矿太阳能电池

Figshare Pub Date : 1753-01-01 DOI: 10.1021/acsami.0c19475.s001

Feng Xu (89016), Ying Sun (23237), Huiping Gao (4726884), Suyue Jin (9941935), Zhenlong Zhang (4726890), Huafang Zhang (4583185), Gencai Pan (4635412), Miao Kang (9941938), Xinqi Ma (9941941), Yanli Mao (530225)

{"title":"High-PerformancenPerovskite Solar Cells Based on NaCsWO3@ NaYF4@NaYF4:Yb,Er Upconversion Nanoparticles","authors":"Feng Xu (89016), Ying Sun (23237), Huiping Gao (4726884), Suyue Jin (9941935), Zhenlong Zhang (4726890), Huafang Zhang (4583185), Gencai Pan (4635412), Miao Kang (9941938), Xinqi Ma (9941941), Yanli Mao (530225)","doi":"10.1021/acsami.0c19475.s001","DOIUrl":"https://doi.org/10.1021/acsami.0c19475.s001","url":null,"abstract":"Extending photoelectric responsento the near-infrared (NIR) regionnusing upconversion luminescent (UCL) materials is one promising approachnto obtain high-efficiency perovskite solar cells (PSCs). However,nchallenges remain due to the shortage of highly efficient UCL materialsnand device structure. NaCsWO3 nanocrystals exhibit near-infrarednabsorption arising from the local surface plasmon resonance (LSPR)neffect, which can be used to boost the UCL of rare-earth-doped upconversionnnanoparticles (UCNPs). In this study, using NaCsWO3 asnthe LSPR center, NaCsWO3@NaYF4@NaYF4:Yb,Er nanoparticles were synthesized and the UCL intensity couldnbe enhanced by more than 124 times when the amount of NaCsWO3 was 2.8 mmol %. Then, such efficient UCNPs were not only doped intonthe hole transport layer but also used to modify the perovskite filmnin PSCs, resulting in the highest power conversion efficiency (PCE)nreaching 18.89% (that of the control device was 16.01% and the PCEnimprovement was 17.99%). Possible factors for the improvement of PSCsnwere studied and analyzed. It is found that UCNPs can broaden thenresponse range of PSCs to the NIR region due to the LSPR-enhancednUCL and increase the visible light reabsorption of PSCs due to thenscattering and reflection effect, which generate more photocurrentnin PSCs. In addition, UCNPs modify the perovskite film by effectivelynfilling the holes and gaps at the grain boundary and eliminating thenperovskite surface defects, which lead to less carrier recombinationnand then effectively improve the performance of PSC devices.","PeriodicalId":521645,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1753-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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