典型文献
Unveiling the origin of performance enhancement of photovoltaic devices by upconversion nanoparticles
文献摘要：
To better utilize the infrared (IR) region in sunlight for photovoltaic devices (PVs),upconversion nanoparticles (UCNPs) have been proposed to improve power conversion efficiency (PCE).However,researchers recently have found that the upconversion (UC) effect is negligible in PVs performance improvement for their ultra-low UC photoluminescence quantum yields of UCNPs solid film,while the real mechanism of UCNPs in PVs has not been clearly studied.Herein,based on the material inorganic perovskites γ-CsPbI3,NaYF4:20％Yb3+,2％Er3+ UCNPs were integrated into different transport layer to opti-mize device performance.Compared with reference device,the short-circuit current density and PCE of optimized device reached 20.87 mA/cm2 (20.39 mA/cm2) and 18,34％ (17.72％),respectively,without sac-rificing open-circuit voltage and filling factor.Further experimental characterizations verified that the improved performance was attributable to enhanced visible light absorption instead of IR.To theoreti-cally explain the statement,the light field distribution in device was simulated and the absorption in dif-ferent layers was calculated.The results revealed that the introduction of UCNPs with different refractive index from other layers caused light field disturbance,and improved visible light captured by γ-CsPbI3.Importantly,through experiments and theoretical calculation,the research deeply explored the potential mechanism of UCNPs in optimizing PVs performance.
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作者姓名：
Huanhuan Yao;Guoqiang Peng;Zhizai Li;Ge Zhu;Wenquan Li;Zhipeng Ci;Wei Lan;Hao Jia;Bin Dong;Zhiwen Jin
作者机构：
School of Physical Science and Technology & National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology,Lanzhou University,Lanzhou 730000,Gansu,China;Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission,Key Laboratory of Photosensitive Materials & Devices of Liaoning Province,College of Physics and Materials Engineering,Dalian Minzu University,Dalian 116600,Liaoning,China;School of Physics and Electronic Information Engineering,Qinghai Normal University,Xining 810008,Qinghai,China
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引用格式：
[1]Huanhuan Yao;Guoqiang Peng;Zhizai Li;Ge Zhu;Wenquan Li;Zhipeng Ci;Wei Lan;Hao Jia;Bin Dong;Zhiwen Jin-.Unveiling the origin of performance enhancement of photovoltaic devices by upconversion nanoparticles)[J].能源化学,2022(02):524-531
A类：
rificing
B类：
Unveiling,origin,performance,enhancement,photovoltaic,devices,by,upconversion,nanoparticles,To,better,utilize,infrared,region,sunlight,PVs,UCNPs,have,been,proposed,power,efficiency,PCE,However,researchers,recently,found,that,effect,negligible,improvement,their,ultra,low,photoluminescence,quantum,yields,solid,film,while,real,mechanism,has,not,clearly,studied,Herein,material,inorganic,perovskites,CsPbI3,NaYF4,Yb3+,Er3+,were,integrated,into,different,transport,Compared,reference,short,circuit,current,density,optimized,reached,mA,respectively,without,sac,open,voltage,filling,Further,experimental,characterizations,verified,improved,was,attributable,enhanced,visible,absorption,instead,cally,explain,statement,field,distribution,simulated,layers,calculated,results,revealed,introduction,refractive,from,other,caused,disturbance,captured,Importantly,through,experiments,theoretical,calculation,deeply,explored,potential,optimizing
AB值：
0.567937
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