Optimizing performance parameters of graphene-silicon and thin transparent graphite-silicon heterojunction solar cells

被引：58

作者：

An, Xiaohong ^{[1
]}

Liu, Fangze ^{[1
]}

Kar, Swastik ^{[1
]}

机构：

[1] Northeastern Univ, Dept Phys, Boston, MA 02115 USA

来源：

CARBON | 2013年 / 57卷

基金：

美国国家科学基金会;

关键词：

LARGE-AREA SYNTHESIS; INTRINSIC SILICON; PHOTOCURRENT; ENHANCEMENT; EFFICIENCY; ELECTRODE; FILMS;

D O I：

10.1016/j.carbon.2013.01.080

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigated heterojunctions of Si with large-area high-quality monolayer and multilayer graphene, as well as thin transparent graphite. We show that by controlling the transmittance and sheet resistance of large-area graphitic electrodes, it is possible to obtain solar cells with power conversion efficiency (PCE) exceeding 3% without any doping requirements. Our calculations indicate that such junctions can form extremely robust interfaces with near-100% internal quantum efficiency. Under optimized doping conditions, power conversion efficiencies increase almost universally by a factor of 2.5. Optimized conditions for reproducibly obtaining cells with PCE > 5% are presented, with the best PCE obtained similar to 7.5% with short-circuit current density exceeding 24 mA/cm(2). (c) 2013 Elsevier Ltd. All rights reserved.

引用

收藏

页码：329 / 337

页数：9

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