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

Se Woong Baek; Sang Hoon Lee; Jung Hoon Song; Changjo Kim; Ye Seol Ha; Hyeyoung Shin; Hyungjun Kim; Sohee Jeong; Jung Yong Lee

doi:10.1039/c7ee03184j

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

Se Woong Baek, Sang Hoon Lee, Jung Hoon Song, Changjo Kim, Ye Seol Ha, Hyeyoung Shin, Hyungjun Kim, Sohee Jeong, Jung Yong Lee

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	2078-2084
Number of pages	7
Journal	Energy and Environmental Science
Volume	11
Issue number	8
DOIs	https://doi.org/10.1039/c7ee03184j
State	Published - Aug 2018
Externally published	Yes

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

abstract = "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.",

author = "Baek, \{Se Woong\} and Lee, \{Sang Hoon\} and Song, \{Jung Hoon\} and Changjo Kim and Ha, \{Ye Seol\} and Hyeyoung Shin and Hyungjun Kim and Sohee Jeong and Lee, \{Jung Yong\}",

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year = "2018",

month = aug,

doi = "10.1039/c7ee03184j",

language = "English",

volume = "11",

pages = "2078--2084",

journal = "Energy and Environmental Science",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - A hydro/oxo-phobic top hole-selective layer for efficient and stable colloidal quantum dot solar cells

AU - Baek, Se Woong

AU - Lee, Sang Hoon

AU - Song, Jung Hoon

AU - Kim, Changjo

AU - Ha, Ye Seol

AU - Shin, Hyeyoung

AU - Kim, Hyungjun

AU - Jeong, Sohee

AU - Lee, Jung Yong

PY - 2018/8

Y1 - 2018/8

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85052066759

U2 - 10.1039/c7ee03184j

DO - 10.1039/c7ee03184j

M3 - Article

AN - SCOPUS:85052066759

SN - 1754-5692

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SP - 2078

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JO - Energy and Environmental Science

JF - Energy and Environmental Science

IS - 8

ER -

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

Abstract

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