A hydro/oxo-phobic top hole-selective layer for efficient and stable colloidal quantum dot solar cells. Issue 8 (29th May 2018)

• Record Type: Journal Article
• Authors: Baek, Se-Woong; Lee, Sang-Hoon; Song, Jung Hoon; Kim, Changjo; Ha, Ye-Seol; Shin, Hyeyoung; Kim, Hyungjun; Jeong, Sohee; Lee, Jung-Yong
• Is Part Of: Energy & environmental science. Volume 11:Issue 8(2018)
• Page Start: 2078
• Page End: 2084
• Publication Date: 2018-05-29
• Subjects: Energy conversion -- Periodicals; Fuel switching -- Periodicals; Environmental sciences -- Periodicals; Environmental chemistry -- Periodicals; 333.79
• DOI: 10.1039/c7ee03184j
• Languages: English
• ISSNs: 1754-5692

Abstract

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. 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.