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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yang-Yue Huang Ward Pan Yi-Chun Lai Yang, T.T. Riqui Chen Chirenjeevi, K. Wei-Shen Weng Peichen Yu Hsin-Fei Meng Charlton, M. |
| Copyright Year | 2013 |
| Description | Author affiliation: Dept. of Photonic, Inst. of Electro-Opt. Eng., Hsinchu, Taiwan (Yang-Yue Huang; Ward Pan; Yi-Chun Lai; Yang, T.T.; Wei-Shen Weng; Peichen Yu) || Fac. of Phys. & Appl. Sci., Univ. of Southampton, Southampton, UK (Riqui Chen; Chirenjeevi, K.; Charlton, M.) || Inst. of Phys., Nat. Chiao Tung Univ., Hsinchu, Taiwan (Hsin-Fei Meng) |
| Abstract | Mono- and multi-crystalline silicon photovoltaics currently still hold more than 80% market share because of the non-toxic, abundant material resources used, and their long-term stabilities. However, the cost of solar power is still more than three times that of fossil fuels, which necessitates a further reduction to accelerate its widespread use. It has been estimated that cell fabrication consumes 30% of the total manufacturing cost due to energy intensive semiconductor processes, such as high temperature furnace for doping, electrodes co-firing, high-vacuum chemical deposition, etc. Therefore, the organic-inorganic hybrid cell concept has been proposed to take advantage of the solution-based processes for rapid and low-cost production and the wide absorption spectrum of silicon. In this work, we demonstrate a hybrid heterojunction solar cell based on the structure of conductive polymer PEDOT:PSS spun cast on n-type crystalline silicon nanorod (SiNR) arrays with periodic arrangements. The nanorod arrays are fabricated by electron beam (E-beam) lithography followed by reactive-ion etching (RIE), which show capability to enhance light harvesting. In addition, SiNRs and PEDOT:PSS can form core-shell structure that provides a large p-n junction area for carrier separation and collection. We measured the optical and photovoltaic characteristics of these devices under a simulated class A solar simulator with a calibrated illumination intensity of 1000 W/m2 for the AM1.5G solar spectrum. A post-RIE damage removal etching (DRE) is subsequently introduced in order to mitigate the surface recombination issues and also alter the surface reflection due to modifications in the nanorod side-wall profile. Finally, we show that the DRE treatment can effectively recover the carrier lifetime and dark current-voltage characteristics of SiNRs hybrid solar cells to resemble the planar counterpart without RIE damages. |
| Sponsorship | IEEE Electron Devices Soc. |
| Starting Page | 1028 |
| Ending Page | 1030 |
| File Size | 441996 |
| Page Count | 3 |
| File Format | |
| DOI | 10.1109/PVSC.2013.6744316 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-06-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Photovoltaic cells Silicon Signal to noise ratio Interference Heterojunctions Etching damage removal etching hybrid solar cell silicon nanorods |
| Content Type | Text |
| Resource Type | Article |
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