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| Understanding the effects of the co-sensitizing ratio on the surface potential, electron injection efficiency, and Forster resonance energy transfer | |
| Yang, Jie1; Peng, Xing-Liang2; Sun, Zhu-Zhu3; Feng, Shuai4; Ding, Wei-Lu5; He, Hong-Yan5; Li, Ze-Sheng1 | |
| 2020-03-14 | |
| Source Publication | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| ISSN | 1463-9076 |
| Volume | 22Issue:10Pages:5568-5576 |
| Abstract | Multiple absorbers that function in different absorption regions (near infra-red (NIR) and UV-Visible (UV-Vis)) have been widely used in solar cell applications to enhance the light-harvesting. Herein, two special co-sensitizing Models 1 and 2, which feature either saturated dye IQ21 or saturated co-sensitizer S2, have been added to a TiO2 surface to explore the effect of the altered sensitizing sequence, namely the co-sensitizing ratio of IQ21/S2 and S2/IQ21 on the electrostatic potential variation (Delta V), electron injection efficiency (eta(inj)'), and Forster resonance energy transfer (FRET), using density functional theory and first-principle molecular dynamics simulations. The Delta V related to the open-circuit voltage (V-oc) is insensitive in both Models 1 and 2. However, the absorption (lambda(abs)) and eta(inj)' associated with the short-circuit density (J(sc)) display a significant deviation (the lambda(abs) for 1 is red-shifted compared to that of 2, and the eta(inj)' for 1 is improved by 56%). Meanwhile, Model 1 manifests a suppressed FRET and potentially favors co-sensitizer S2 functioning as the electron-injector and not the energy-donor. Another two possible Models 3 and 4 that feature a reduced adsorption of IQ21 and S2 relative to 1 and 2 were considered further, and the result mirrors the main trend in 1 and 2, except for the eta(inj)'. Overall, it implies that sensitizing a larger absorber with NIR features to saturate it first, then introducing a smaller absorber with UV-Vis features, can potentially improve the electron injection and diminish electron-hole recombination considerably. Our results provide a comprehensive analysis of the active role of an optimized sensitizing sequence to improve the conversion efficiency. |
| DOI | 10.1039/c9cp06028f |
| Language | 英语 |
| WOS Keyword | A FEATURED SENSITIZERS ; SOLAR-CELLS ; ORGANIC-DYES ; MOLECULAR-DYNAMICS ; ABSORPTION VALLEY ; HIGHLY-EFFICIENT ; TIO2 ; 1ST-PRINCIPLES ; INSIGHTS ; COSENSITIZATION |
| Funding Project | Major State Basic Research Development Programs of China[2011CBA00701] ; National Natural Science Foundation of China[21303007] ; National Natural Science Foundation of China[21473010] ; Beijing Key Laboratory for Chemical Power Source and Green Catalysis[2013CX02031] ; General Program of National Natural Science Foundation of China[21776278] |
| WOS Research Area | Chemistry ; Physics |
| WOS Subject | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
| Funding Organization | Major State Basic Research Development Programs of China ; National Natural Science Foundation of China ; Beijing Key Laboratory for Chemical Power Source and Green Catalysis ; General Program of National Natural Science Foundation of China |
| WOS ID | WOS:000528810000012 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/40382 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Ding, Wei-Lu; Li, Ze-Sheng |
| Affiliation | 1.Beijing Inst Technol, Beijing Key Lab Photoelect Electrophoton Convers, Beijing Key Lab Chem Power Source & Green Catalys, Key Lab Cluster Sci,Minist Educ,Sch Chem, Beijing 100081, Peoples R China 2.Tsinghua Univ, Dept Chem, MOE Key Lab Organ OptoElect & Mol Engn, Beijing 100084, Peoples R China 3.Xinyang Normal Univ, Energy Saving Bldg Mat Innovat Collaborat Ctr Hen, Xinyang 464000, Peoples R China 4.Taishan Univ, Coll Chem & Chem Engn, Tai An 271021, Shandong, Peoples R China 5.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, CAS Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Jie,Peng, Xing-Liang,Sun, Zhu-Zhu,et al. Understanding the effects of the co-sensitizing ratio on the surface potential, electron injection efficiency, and Forster resonance energy transfer[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2020,22(10):5568-5576. |
| APA | Yang, Jie.,Peng, Xing-Liang.,Sun, Zhu-Zhu.,Feng, Shuai.,Ding, Wei-Lu.,...&Li, Ze-Sheng.(2020).Understanding the effects of the co-sensitizing ratio on the surface potential, electron injection efficiency, and Forster resonance energy transfer.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,22(10),5568-5576. |
| MLA | Yang, Jie,et al."Understanding the effects of the co-sensitizing ratio on the surface potential, electron injection efficiency, and Forster resonance energy transfer".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 22.10(2020):5568-5576. |
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