Photocurrent Induced by Nonradiative Energy Transfer from Nanocrystal Quantum Dots to Adjacent Silicon Nanowire Conducting Channels: Toward a New Solar Cell Paradigm
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- 作者：Siyuan Lu ; Zachary Lingley ; Tetsuya Asano ; Daniel Harris ; Tymon Barwicz ; Supratik Guha ; Anupam Madhukar
- 刊名：Nano Letters
- 出版年：2009
- 出版时间：December 9, 2009
- 年：2009
- 卷：9
- 期：12
- 页码：4548-4552
- 全文大小：216K
- 年卷期：v.9,no.12(December 9, 2009)
- ISSN：1530-6992
文摘
We report the observation of photocurrent in silicon nanowires induced by nonradiative resonant energy transfer (NRET) from adjacent layers of lead sulfide nanocrystal quantum dots using time-resolved photocurrent measurements. This demonstration supports the feasibility of a new solar cell paradigm (Lu, S.; Madhukar, A. Nano Lett. 2007, 7, 3443−3451) that exploits NRET between efficient photon absorbers and adjacent nanowire/quantum well high-mobility charge transport channels and could offer a viable alternative to the limitations of carrier transport and collection faced by excitonic solar cells.