Effect of substrate temperature on the charge transport property of Ta2O5 cathode buffer layer in inverted polymer solar cells

被引：2
|
作者：
Fernandes, Jean Maria [1 ]
Kovendhan, M. [2 ]
Muniramaiah, R. [1 ]
Purushothamreddy, Nandarapu [1 ]
Viswanathan, E. [3 ]
Joseph, D. Paul [1 ]
机构：
[1] Natl Inst Technol Warangal, Dept Phys, Warangal 506004, Telangana, India
[2] SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Kattankulathur 603203, Tamil Nadu, India
[3] Sri Sankara Arts & Sci Coll, Dept Phys, Kancheepuram 631561, Tamil Nadu, India
来源：
MATERIALS LETTERS | 2021年 / 298卷
关键词：
Charge transport; Ta2O5; Cathode buffer layer; Substrate temperature; Inverted polymer solar cell; Power conversion efficiency; FILMS;
D O I：
10.1016/j.matlet.2021.130038
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Charge extraction ability in inverted polymer solar cells (IPSCs) can be enhanced using thermally evaporated compact Ta2O5 as cathode buffer layer (CBL) deposited onto indium tin oxide (ITO) substrate by varying the substrate temperature from 200 degrees C to 250 degrees C. The deposited polycrystalline films exhibit granular morphology with high optical transmittance around 500 nm and significant variation in defects with respect to ITO substrate temperature. Current density-voltage measurements show improvement in power conversion efficiency from 2.8% to 3.1% with ratio/percentage enhancement of 10.7% when substrate temperature is increased from 200 degrees C to 250 degrees C. (C) 2021 Elsevier B.V. All rights reserved.
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页数：4
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