The Exploration of Carrier Behavior in the Inverted Mixed Perovskite Single‐Crystal Solar Cells. Issue 14 (16th May 2018)

• Record Type: Journal Article
• Authors: Huang, Yuan; Zhang, Yu; Sun, Junlu; Wang, Xiaoge; Sun, Junliang; Chen, Qi; Pan, Caofeng; Zhou, Huanping
• Is Part Of: Advanced materials interfaces. Volume 5:Issue 14(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-05-16
• Subjects: (FAPbI3)0.85(MAPbBr3)0.15 -- carrier dynamics -- polydimethylsiloxane (PDMS) -- single‐crystal solar cells -- TiO2; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.201800224
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: Perovskite single crystal (PSC) possesses fewer bulk defects than the polycrystalline film counterpart, which has received extensive attention in a number of optoelectronic device applications. But the management of carrier behavior in an efficient solar cell based on PSC is not reported yet. Here, the carrier behavior within the device based on the ITO/NiOx /(FAPbI3 )0.85 (MAPbBr3 )0.15 /TiO2 /Ag structure (FA = CH(NH2 )2 +, MA = CH3 NH3 + ), in which the mixed PSC is successfully implemented into solar cells for the first time, is investigated. The PSC films with lateral dimension from 500 µm to 2 mm and thickness over tens of micrometers, are obtained through the polydimethylsiloxane‐assisted solvent evaporation method. The highest power conversion efficiency derived from the present device approaches 12.18%. It is revealed that the surface roughness and thickness of PSC, the operation temperature and thickness of transport layers, and the interfaces of transport layers/PSC largely impact the carrier extraction and device performance of the perovskite single‐crystal solar cell (PSCSC). This work indicates that the carrier behavior in the absorber layer and transport layer has large impact on the performance of PSCSCs, while the underlying design rule represents an important step to advance the PSCSCs and other optoelectronic devices. Abstract : Compared to polycrystalline films, perovskite single‐crystal (PSC) films have fewer defects and great potential for high‐performance optoelectronic devices. The first mixed (FAPbI3 )0.85 (MAPbBr3 )0.15 PSC films prepared by polydimethylsiloxane‐assisted solvent evaporation method are implemented in inverted ITO/NiOx /perovskite/TiO2 /Ag solar cells. Optimizing the quality of perovskite, transport layers, and their interfaces, leads to an efficiency of 12.18%, among the high‐efficiency PSC solar cells.