In this paper, a-Si：H/a-SiGe：H/μc-SiGe：H triple-junction solar cell structure is proposed. By the analyses of mi- croelectronic and photonic structures （AMPS-1D） and our TRJ-F/TRJ-M/TRJ-B tunneling-recombination...In this paper, a-Si：H/a-SiGe：H/μc-SiGe：H triple-junction solar cell structure is proposed. By the analyses of mi- croelectronic and photonic structures （AMPS-1D） and our TRJ-F/TRJ-M/TRJ-B tunneling-recombination junction （TRJ） model, the most preferably combined bandgap for this structure is found to be 1.85 eV/1.50 eV/1.0 eV. Using more realistic material properties, optimized thickness combination is investigated. Along this direction, a-Si：H/a-SiGe：H/μc-SiGe：H triple cell with an initial efficiency of 12.09% （Voc = 2.03 V, FF = 0.69, Jsc = 8.63 mA/cm^2, area = 1 cm^2） is achieved in our laboratory.展开更多
Atomically dispersed metal-nitrogen-carbon catalysts(M-N-C)have been widely used in the field of energy conversion,which has high commercial application value in future directions.However,the commercialization of M-N-...Atomically dispersed metal-nitrogen-carbon catalysts(M-N-C)have been widely used in the field of energy conversion,which has high commercial application value in future directions.However,the commercialization of M-N-C catalysts necessitates further requirements for their catalytic activity,especially their intrinsic catalytic activity.Fortunately,current research has provided many modification strategies,which are of great significance for the development of M-N-C catalysts.In this review,the catalytic mechanism of different electrocatalytic reactions is briefly introduced.In addition,intrinsic catalytic activity enhancement strategies are systematically summarized,including the coordination structure,carrier effect,and interaction of active centers.Furthermore,we focus on clarifying the relationship between microelectronic structure and macro-catalytic activity of M-N-C catalysts in different electrochemical energy conversion reactions.The future research directions are also pointed out based on our discussion.This review provides good guidance to systematically study the intrinsic catalytic activity enhancement strategies of M-N-C catalysts and reasonably design highly catalytic M-N-C catalysts.展开更多
基金supported by the National Basic Research Program of China (Grant Nos. 2011CBA00705, 2011CBA00706, and 2011CBA00707)the Natural Science Foundation of Tianjin City, China (Grant No. 12JCQNJC01000)the Fundamental Research Funds for the Central Universities of China (Grant No. 65012371)
文摘In this paper, a-Si：H/a-SiGe：H/μc-SiGe：H triple-junction solar cell structure is proposed. By the analyses of mi- croelectronic and photonic structures （AMPS-1D） and our TRJ-F/TRJ-M/TRJ-B tunneling-recombination junction （TRJ） model, the most preferably combined bandgap for this structure is found to be 1.85 eV/1.50 eV/1.0 eV. Using more realistic material properties, optimized thickness combination is investigated. Along this direction, a-Si：H/a-SiGe：H/μc-SiGe：H triple cell with an initial efficiency of 12.09% （Voc = 2.03 V, FF = 0.69, Jsc = 8.63 mA/cm^2, area = 1 cm^2） is achieved in our laboratory.
基金the National Natural Science Foundation of China(grant nos.22075062 and 21905070)the Fundamental and Applied Fundamental Research Fund of Guangdong Province(grant no.2022B151520001)+1 种基金the High-Level Professional Team in Shenzhen(grant no.KQTD20210811090045006)the Shenzhen Science and Technology Program(grant nos.20220809194504001,JCYJ20210324120400002,and SGDX20210823103803017).
文摘Atomically dispersed metal-nitrogen-carbon catalysts(M-N-C)have been widely used in the field of energy conversion,which has high commercial application value in future directions.However,the commercialization of M-N-C catalysts necessitates further requirements for their catalytic activity,especially their intrinsic catalytic activity.Fortunately,current research has provided many modification strategies,which are of great significance for the development of M-N-C catalysts.In this review,the catalytic mechanism of different electrocatalytic reactions is briefly introduced.In addition,intrinsic catalytic activity enhancement strategies are systematically summarized,including the coordination structure,carrier effect,and interaction of active centers.Furthermore,we focus on clarifying the relationship between microelectronic structure and macro-catalytic activity of M-N-C catalysts in different electrochemical energy conversion reactions.The future research directions are also pointed out based on our discussion.This review provides good guidance to systematically study the intrinsic catalytic activity enhancement strategies of M-N-C catalysts and reasonably design highly catalytic M-N-C catalysts.
