当コンソーシアムが共催するセミナーを開催いたします。

皆さま奮ってご参加下さい。

 

【日時】

2014年7月24日（木）17:30～

 

【場所】

東北大学　産学連携先端材料研究開発センター　1F会議室 （地図・C5）

 

【主催】

東北大学 最先端電池基盤技術コンソーシアム

東北大学 流体科学研究所 未到エネルギー研究センター

（共催）

 

【演題】

Towards Solution-Processed Hybrid Organic/Silicon Heterojunction Solar cells

 

【講師】

Professor Peichen Yu

(Department of Photonics, National Chiao-Tung University/国立交通大学, Taiwan)

 

【内容】

In this talk, we will discuss strategies to realize all-solution processed hybrid organic -silicon heterojunction solar cells. First, hybrid solar cells are demonstrated based on a conjugate polymer PEDOT:PSS directly spun-cast on a micro-textured n-type crystalline silicon wafer, which is compatible with current industrial processes. The fabrication conditions suggest that the organic coverage on the textured surface is excellent and key to achieve high efficiency, leading to an average power conversion efficiency of 9.84% on 0.3 x 0.3 cm2 cells. A one-dimensional drift-diffusion model is further developed based on fitting the device characteristics with experimentally determined PEDOT:PSS parameters. The projected power conversion efficiency can potentially exceed 20% via the control of surface reflection, interface defect density, rear surface recombination, etc. Second, we employ low-cost, solution-processed silver-nanowire meshes to enable efficient carrier collection for scalability.The characteristics and device performance with long and short nanowires are systematically compared. A power conversion efficiency of 10.1% is achieved with a device area of 1×1 cm2 under 100 mW/cm2 of AM1.5G illumination for the hybrid solar cells employing long wires, which represents an enhancement factor of up to 36.5% compared to the metal grid counterpart. The capability of silver nanowires as flexible transparent electrodes presents a great opportunity to accelerate the mass deployment of high-efficiency hybrid silicon photovoltaics via simple and rapid soluble processes. Looking forward, the use of silicon nanowire templates in hybrid photovoltaic devices are investigated, where interface engineering via organic materials plays a critical role to mitigate the tradeoffs between light harvesting and carrier collection for future applications.

 

【申込方法】

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【参加費】

無料

 

【登録方法】

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