Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이정호 | - |
dc.date.accessioned | 2018-07-24T06:51:13Z | - |
dc.date.available | 2018-07-24T06:51:13Z | - |
dc.date.issued | 2017-12 | - |
dc.identifier.citation | JOURNAL OF PHYSICS D-APPLIED PHYSICS, v. 51, No. 2, Article no. 024004 | en_US |
dc.identifier.issn | 0022-3727 | - |
dc.identifier.issn | 1361-6463 | - |
dc.identifier.uri | http://iopscience.iop.org/article/10.1088/1361-6463/aa9de6/meta | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/72709 | - |
dc.description.abstract | We present femtosecond optical pump-terahertz probe studies on the ultrafast dynamical processes of photo-generated charge carriers in silicon photovoltaic cells with various nanostructured surfaces and doping densities. The pump-probe measurements provide direct insight on the lifetime of photo-generated carriers, frequency-dependent complex dielectric response along with photoconductivity of silicon photovoltaic cells excited by optical pump pulses. A lifetime of photo-generated carriers of tens of nanosecond is identified from the time-dependent pump-induced attenuation of the terahertz transmission. In addition, we find a large value of the imaginary part of the dielectric function and of the real part of the photoconductivity in silicon photovoltaic cells with micron length nanowires. We attribute these findings to the result of defect-enhanced electron-photon interactions. Moreover, doping densities of phosphorous impurities in silicon photovoltaic cells are also quantified using the Drude-Smith model with our measured frequency-dependent complex photoconductivities. | en_US |
dc.description.sponsorship | This work was funded by the 973 Program of China (No. 2013CBA01702); National Natural Science Foundation of China (No. 11404224, 11774243, 11374216, 11774246, and 11474206); General program of science and technology development project of Beijing Municipal Education Commission under Grant No. KM201510028004; Beijing youth top-notch talent training plan (CIT & Beijing Nova Program Grant No. Z161100004916100 and Scientific Research Base Development Program of the Beijing Municipal Commission of Education; Youth Innovative Research Team of Capital Normal University. We acknowledge Professor Dr Gabriel Bester from University of Hamburg (Germany), for his helpful discussions and corrections on the English writing. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | IOP PUBLISHING LTD | en_US |
dc.subject | ultrafast dynamical process | en_US |
dc.subject | micro-nanostructure | en_US |
dc.subject | pump-probe | en_US |
dc.subject | photo-excited carriers | en_US |
dc.subject | silicon photovoltaic cell | en_US |
dc.title | Effects of surface nanostructuring and impurity doping on ultrafast carrier dynamics of silicon photovoltaic cells: a pump-probe study | en_US |
dc.type | Article | en_US |
dc.relation.no | 024004 | - |
dc.relation.volume | 51 | - |
dc.identifier.doi | 10.1088/1361-6463/aa9de6 | - |
dc.relation.page | 1-7 | - |
dc.relation.journal | JOURNAL OF PHYSICS D-APPLIED PHYSICS | - |
dc.contributor.googleauthor | Chen, Tianyu | - |
dc.contributor.googleauthor | Nam, Yoon-Ho | - |
dc.contributor.googleauthor | Wang, Xinke | - |
dc.contributor.googleauthor | Han, Peng | - |
dc.contributor.googleauthor | Sun, Wenfeng | - |
dc.contributor.googleauthor | Feng, Shengfei | - |
dc.contributor.googleauthor | Ye, Jiasheng | - |
dc.contributor.googleauthor | Song, Jae-Won | - |
dc.contributor.googleauthor | Lee, Jung-Ho | - |
dc.contributor.googleauthor | Zhang, Chao | - |
dc.contributor.googleauthor | Zhang, Yan | - |
dc.relation.code | 2017003261 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING | - |
dc.identifier.pid | jungho | - |
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