Indoor photovoltaics(IPVs)have attracted considerable interest for their potential to power small and portable electronics and photonic devices.The recent advancemes in circuit design and device optimizations has led ...Indoor photovoltaics(IPVs)have attracted considerable interest for their potential to power small and portable electronics and photonic devices.The recent advancemes in circuit design and device optimizations has led to the power required to operate electronics for the internet of things(IoT),such as dis-tributed sensors,remote actuators,and communication devices,being remark-ably reduced.Therefore,various types of sensors and a large number of nodes can be wireless or even batteryless powered by IPVs.In this review,we provide a comprehensive overview of the recent developments in IPVs.We primarily focus on third-generation solution-processed solar cell technologies,which include organic solar cells,dye-sensitized solar cells,perovskite solar cells,and newly developed colloidal quantum dot indoor solar cells.Besides,the device design principles are also discussed in relation to the unique characteristics of indoor lighting conditions.Challenges and prospects for the development of IPV are also summarized,which,hopefully,can lead to a better understanding of future IPV design as well as performance enhancement.展开更多
The surface properties and chemical interactions are critical for perovskite solar cells(PVSCs).In this work,we show that the polypropylene glycol(PPG)can simultaneously passivate the NiOx surface and grain boundaries...The surface properties and chemical interactions are critical for perovskite solar cells(PVSCs).In this work,we show that the polypropylene glycol(PPG)can simultaneously passivate the NiOx surface and grain boundaries of perovskite films,allowing more efficient charge transfer at the anode interface and reducing the recombination of PVSCs.As a result,the open-circuit voltage(Voc)of MAPbI3 based inverted PVSCs increases from 1.087 V to 1.127 V,and the short-circuit current density(Jsc)is increased from 20.87 mA·cm^(–2) to 22.32 mA·cm^(–2),thereby realizing the improvement of the device power conversion efficiency(PCE)from 18.34%to 20.12%.Moreover,the steady-state output of the PVSCs is remarkably improved by incorporating PPG.Further analysis of surface properties suggests that part of the PPG at the interface can permeate into the precursor solution with the help of DMF solvent and remain in the perovskite layer to form a concentration gradient.The ether bond of PPG and the uncoordinated Pb2+in the perovskite are coordinated to achieve passivation effects and improve device performance.展开更多
基金Cardiff University,Grant/Award Number:Grant to Bo HouUK Engineering and Physical Sciences Research Council,Grant/Award Number:EP/P027628/1。
文摘Indoor photovoltaics(IPVs)have attracted considerable interest for their potential to power small and portable electronics and photonic devices.The recent advancemes in circuit design and device optimizations has led to the power required to operate electronics for the internet of things(IoT),such as dis-tributed sensors,remote actuators,and communication devices,being remark-ably reduced.Therefore,various types of sensors and a large number of nodes can be wireless or even batteryless powered by IPVs.In this review,we provide a comprehensive overview of the recent developments in IPVs.We primarily focus on third-generation solution-processed solar cell technologies,which include organic solar cells,dye-sensitized solar cells,perovskite solar cells,and newly developed colloidal quantum dot indoor solar cells.Besides,the device design principles are also discussed in relation to the unique characteristics of indoor lighting conditions.Challenges and prospects for the development of IPV are also summarized,which,hopefully,can lead to a better understanding of future IPV design as well as performance enhancement.
基金supported by the National Natural Science Foundation of China(Nos.51961145301,52173185,52103324,and 61721005).We also acknowledge gratefully the"pioneering"and"Leading Goose"R&D Program of Zhejiang(No.2022C01104)the Fundamental Research Funds for the Central Universities(No.226-2022-00133)research start-up fund from Zhejiang University.
文摘The surface properties and chemical interactions are critical for perovskite solar cells(PVSCs).In this work,we show that the polypropylene glycol(PPG)can simultaneously passivate the NiOx surface and grain boundaries of perovskite films,allowing more efficient charge transfer at the anode interface and reducing the recombination of PVSCs.As a result,the open-circuit voltage(Voc)of MAPbI3 based inverted PVSCs increases from 1.087 V to 1.127 V,and the short-circuit current density(Jsc)is increased from 20.87 mA·cm^(–2) to 22.32 mA·cm^(–2),thereby realizing the improvement of the device power conversion efficiency(PCE)from 18.34%to 20.12%.Moreover,the steady-state output of the PVSCs is remarkably improved by incorporating PPG.Further analysis of surface properties suggests that part of the PPG at the interface can permeate into the precursor solution with the help of DMF solvent and remain in the perovskite layer to form a concentration gradient.The ether bond of PPG and the uncoordinated Pb2+in the perovskite are coordinated to achieve passivation effects and improve device performance.
