We introduce a dual distribution of relaxation(DRT)based approach for analyzing electrochemical impedance spectroscopy(EIS)data in perovskite solar cells(PSCs),combining regression and classification with Bayesian mod...We introduce a dual distribution of relaxation(DRT)based approach for analyzing electrochemical impedance spectroscopy(EIS)data in perovskite solar cells(PSCs),combining regression and classification with Bayesian model selection and Havriliak-Negami(HN)modeling to resolve spectra into discrete,Lorentzian-like peaks.This time-domain decomposition offers a powerful alternative for identifying underlying physical processes,such as charge transfer,trap-assisted recombination,and ionic migration by directly extracting characteristic relaxation times(τ).In contrast to traditional equivalent circuit fitting or conventional DRT methods,which often yield broad and overlapping Gaussian-like peaks,our method enables sharper resolution of individual electrochemical signatures.Furthermore,we validated the framework using simulated EIS spectra for two distinct system types,determining the optimal number of peaks(Q)through statistical model selection.Applied to experimental PSC data under varying bias conditions,the approach helps to identify the voltage-dependent relaxation processes,including fast charge transfer(τ~10^(-6)s),intermediate trap-mediated recombination(τ~10^(-2)s),and slow ionic motion(τ~1 s).Lower-Q models fail to capture low-frequency features such as polarization and charge accumulation,while optimal Q yields accurate,physically meaningful representations of device behavior.This data-driven methodology highlights time-domain DRT as a rigorous and insightful tool for dissecting the complex kinetics that govern PSC performance.展开更多
DNA损伤修复/耐受性100(DNA-damage repair/tolerance 100,DRT100)编码一种富含亮氨酸重复序列的蛋白质,广泛参与植物生长发育与非生物胁迫响应过程。为鉴定大豆(Glycine max L.)中DRT100基因家族成员、揭示其进化关系及其与大豆抗旱耐...DNA损伤修复/耐受性100(DNA-damage repair/tolerance 100,DRT100)编码一种富含亮氨酸重复序列的蛋白质,广泛参与植物生长发育与非生物胁迫响应过程。为鉴定大豆(Glycine max L.)中DRT100基因家族成员、揭示其进化关系及其与大豆抗旱耐盐相关功能,本研究在大豆全基因组水平上鉴定出8个DRT100基因,对其基因结构特征、系统进化、启动子顺式作用元件、基因表达模式等进行了分析。结果表明:8个GmDRT100基因位于5条大豆染色体上,具有相对保守的基因结构和保守基序,同时还具有多种与激素和非生物胁迫相关的顺式作用元件。RT-qPCR分析揭示8个GmDRT100家族成员在盐旱胁迫下均不同程度的上调表达,且GmDRT100-6在干旱和盐胁迫下均显著上调。进一步研究GmDRT100-6的功能,结果表明GmDRT100-6蛋白位于细胞膜中,大豆毛状根中GmDRT100-6基因的过表达提高了植株的耐旱性和耐盐性。这些研究结果表明GmDRT100-6在大豆抗旱、抗盐胁迫中发挥了重要作用。展开更多
基金the ORSP of Pandit Deendayal Energy University and DST SERB(IPA/2021/96)for the financial supportthe Deanship of Research and Graduate Studies at King Khalid University for funding this work through the Large Research Project under grant number RGP 2/345/45。
文摘We introduce a dual distribution of relaxation(DRT)based approach for analyzing electrochemical impedance spectroscopy(EIS)data in perovskite solar cells(PSCs),combining regression and classification with Bayesian model selection and Havriliak-Negami(HN)modeling to resolve spectra into discrete,Lorentzian-like peaks.This time-domain decomposition offers a powerful alternative for identifying underlying physical processes,such as charge transfer,trap-assisted recombination,and ionic migration by directly extracting characteristic relaxation times(τ).In contrast to traditional equivalent circuit fitting or conventional DRT methods,which often yield broad and overlapping Gaussian-like peaks,our method enables sharper resolution of individual electrochemical signatures.Furthermore,we validated the framework using simulated EIS spectra for two distinct system types,determining the optimal number of peaks(Q)through statistical model selection.Applied to experimental PSC data under varying bias conditions,the approach helps to identify the voltage-dependent relaxation processes,including fast charge transfer(τ~10^(-6)s),intermediate trap-mediated recombination(τ~10^(-2)s),and slow ionic motion(τ~1 s).Lower-Q models fail to capture low-frequency features such as polarization and charge accumulation,while optimal Q yields accurate,physically meaningful representations of device behavior.This data-driven methodology highlights time-domain DRT as a rigorous and insightful tool for dissecting the complex kinetics that govern PSC performance.
文摘DNA损伤修复/耐受性100(DNA-damage repair/tolerance 100,DRT100)编码一种富含亮氨酸重复序列的蛋白质,广泛参与植物生长发育与非生物胁迫响应过程。为鉴定大豆(Glycine max L.)中DRT100基因家族成员、揭示其进化关系及其与大豆抗旱耐盐相关功能,本研究在大豆全基因组水平上鉴定出8个DRT100基因,对其基因结构特征、系统进化、启动子顺式作用元件、基因表达模式等进行了分析。结果表明:8个GmDRT100基因位于5条大豆染色体上,具有相对保守的基因结构和保守基序,同时还具有多种与激素和非生物胁迫相关的顺式作用元件。RT-qPCR分析揭示8个GmDRT100家族成员在盐旱胁迫下均不同程度的上调表达,且GmDRT100-6在干旱和盐胁迫下均显著上调。进一步研究GmDRT100-6的功能,结果表明GmDRT100-6蛋白位于细胞膜中,大豆毛状根中GmDRT100-6基因的过表达提高了植株的耐旱性和耐盐性。这些研究结果表明GmDRT100-6在大豆抗旱、抗盐胁迫中发挥了重要作用。
