Modeling the Impact of Metallic Plasmonic Resonators on the Solar Conversion Efficiencies of Semiconductor Photoelectrodes: When Does Introducing Buried Plasmonic Nanostructures Make Sense?
Modeling the Impact of Metallic Plasmonic Resonators on the Solar Conversion Efficiencies of Semiconductor Photoelectrodes: When Does Introducing Buried Plasmonic Nanostructures Make Sense?
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DOI：
10.1021/acs.jpcc.8b07214
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
Paul A. Hernley;S. Linic
中科院分区：
文献类型：
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作者：
Paul A. Hernley;S. Linic
众所周知，嵌入半导体中的等离子体纳米颗粒在某些条件下可以通过改变半导体中吸收光子的深度来提高与半导体表面结合的电催化剂中的电荷载流子收集速率。导致这种效应的一种机制是通过等离子体金属纳米粒子引起的近场和散射效应将光子能量注入半导体。众所周知，这些金属等离子体材料也是光子吸收体，可以将入射电磁能耗散成热量，从而使它们成为相对有效的寄生吸收体。因此，目前尚不清楚在什么情况下等离子体纳米结构应该提高半导体的量子效率。我们开发了一个物理透明模型来证明何时将埋藏等离子体金属纳米颗粒引入半导体有利于提高光子转换效率。特...
It is well established that plasmonic nanoparticles embedded in a semiconductor can, under certain conditions, increase the rate of charge carrier collection in electrocatalysts bound to the semiconductor surface by changing the depth at which photons are absorbed in the semiconductor. One mechanism that leads to this effect is the injection of photon energy into the semiconductor by near-field and scattering effects induced by plasmonic metal nanoparticles. It is also well-known that these metallic plasmonic materials are also photon absorbers that can dissipate the incident electromagnetic energy into heat, which can make them into relatively efficient parasitic absorbers. Therefore, it is not clear under what circumstances plasmonic nanostructures should enhance the quantum efficiencies of semiconductors. We have developed a physically transparent model to demonstrate when introducing buried plasmonic metal nanoparticles into semiconductors is beneficial to improving the photon conversion efficiency. T...