A hydro/oxo-phobic top hole-selective layer for efficient and stable colloidal quantum dot solar cells

被引：44

作者：

Baek, Se-Woong ^{[1
]}

Lee, Sang-Hoon ^{[1
]}

Song, Jung Hoon ^{[2
]}

Kim, Changjo ^{[1
]}

Ha, Ye-Seol ^{[1
]}

Shin, Hyeyoung ^{[1
,3
]}

Kim, Hyungjun ^{[1
]}

Jeong, Sohee ^{[2
,4
]}

Lee, Jung-Yong ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Grad Sch Energy Environm Water & Sustainabil EEWS, Daejeon 34141, South Korea

[2] Korea Inst Machinery & Mat, Nanomech Syst Res Div, Daejeon 34113, South Korea

[3] CALTECH, Mat & Proc Simulat Ctr, Pasadena, CA 91125 USA

[4] Univ Sci & Technol, Dept Nanomechatron, Daejeon 34113, South Korea

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2018年 / 11卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

MOLECULAR-DYNAMICS; OXIDE;

D O I：

10.1039/c7ee03184j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this report, we explore the underlying mechanisms by which doped organic thin films as a top hole-selective layer (HSL) improve the performance and stability of colloidal quantum dot (CQD)-based solar cells. Molecular dynamics-based theoretical studies prove that the hydro/oxo-phobic properties of the HSL serve to efficiently passivate the CQD solid. Furthermore, the robust and outstanding electrical properties of the HSL, simultaneously ensure a high power conversion efficiency (PCE) and increase the stability performance of CQD-based solar cells. As a result, a best PCE of 11.7% in a lead sulfide (PbS)-based CQD solar cell is achieved and over 90% of the initial performance is retained after 1 year storage under ambient conditions.

引用

页码：2078 / 2084

页数：7

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