Characteristics of conductive polymer/silicon heterojunction solar cells with periodic nanostructures

Yang Yue Huang, Ward Pan, Yi Chun Lai, T. T. Yang, Riqui Chen, Krishnan Chirenjeevi, Wei Shen Weng, Peichen Yu, Hsin-Fei Meng, Martin Charlton

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

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.

原文English
主出版物標題39th IEEE Photovoltaic Specialists Conference, PVSC 2013
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1028-1030
頁數3
ISBN(列印)9781479932993
DOIs
出版狀態Published - 1 一月 2013
事件39th IEEE Photovoltaic Specialists Conference, PVSC 2013 - Tampa, FL, United States
持續時間: 16 六月 201321 六月 2013

出版系列

名字Conference Record of the IEEE Photovoltaic Specialists Conference
ISSN(列印)0160-8371

Conference

Conference39th IEEE Photovoltaic Specialists Conference, PVSC 2013
國家United States
城市Tampa, FL
期間16/06/1321/06/13

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