项目来源

巴西圣保罗研究基金(FAPESP)

项目主持人

Carlos Frederico de Oliveira Graeff

项目受资助机构

Faculdade de Ciências.Universidade Estadual Paulista.Campus de Bauru.Bauru,SP,Brazil

立项年度

2024

立项时间

未公开

项目编号

24/03707-2

项目级别

国家级

研究期限

未知 / 未知

受资助金额

未知

学科

Physical Sciences and Mathematics

学科代码

未公开

基金类别

Scholarships in Brazil-Scientific Initiation

关键词

Energia renovável ; Impedância ; Óxido de nióbio ; Espectroscopia ; Células solares ; Perovskita ;

参与者

Gabriel Dias Trevisan

参与机构

未公开

项目标书摘要：Perovskite solar cells(PSCs)are among the emerging photovoltaic technologies due to their superior optoelectronic properties.A notable efficiency enhancement of solution-processed PSCs was achieved after only 15 years of research(from 3.8%to 26%).At the current stage,the characterization and diagnostic protocols are essential to pave the transition towards commercial viability.Although well-established,the stand-alone current-voltage(JV)measurements do not provide insight into the nature of the dynamic processes that determine and limit the performance of PSCs.These phenomena can be evaluated by applying disturbances to the system through an external signal and analyzing the response.The impedance spectroscopy deals with small disturbances along the frequency domain,whereas the photo-CELIV technique deals with voltage and light disturbances.Such methods stand out for complementing conventional JV characterizations.However,despite the ease of implementation,they can present interpretation challenges and require care for performing the measurements.In this project,we propose the study of double-cation mixed perovskite solar cells with formulation Cs0.17FA0.83Pb(I0.83Br0.17)3,both in a conventional(n-i-p)and an inverted(p-i-n)architecture.Once the modifications in the PSCs layers and interfaces affect their electrical behavior,one can evaluate the effects of device ageing and optimization through the buffer layers(PMMA,PEI,BCP)or dopants(MXenes).Therefore,this proposal will contribute to exploring the properties of the devices,enabling further improvements.

Application Abstract: Perovskite solar cells(PSCs)are among the emerging photovoltaic technologies due to their superior optoelectronic properties.A notable efficiency enhancement of solution-processed PSCs was achieved after only 15 years of research(from 3.8%to 26%).At the current stage,the characterization and diagnostic protocols are essential to pave the transition towards commercial viability.Although well-established,the stand-alone current-voltage(JV)measurements do not provide insight into the nature of the dynamic processes that determine and limit the performance of PSCs.These phenomena can be evaluated by applying disturbances to the system through an external signal and analyzing the response.The impedance spectroscopy deals with small disturbances along the frequency domain,whereas the photo-CELIV technique deals with voltage and light disturbances.Such methods stand out for complementing conventional JV characterizations.However,despite the ease of implementation,they can present interpretation challenges and require care for performing the measurements.In this project,we propose the study of double-cation mixed perovskite solar cells with formulation Cs0.17FA0.83Pb(I0.83Br0.17)3,both in a conventional(n-i-p)and an inverted(p-i-n)architecture.Once the modifications in the PSCs layers and interfaces affect their electrical behavior,one can evaluate the effects of device ageing and optimization through the buffer layers(PMMA,PEI,BCP)or dopants(MXenes).Therefore,this proposal will contribute to exploring the properties of the devices,enabling further improvements.