Improved size distribution ofAgBiS(2)colloidal nanocrystals by optimized synthetic route enhances photovoltaic performance
- Authors
- Oh, Jae Taek; Cho, Hongjoo; Bae, Sung Yong; Lim, Sung Jun; Kang, Jinhyeon; Jung, In Hwan; Choi, Hyosung; Kim, Younghoon
- Issue Date
- Oct-2020
- Publisher
- WILEY
- Keywords
- colloidal nanocrystal; environmentally-friendly; photovoltaic device; silver bismuth sulfide; size distribution
- Citation
- INTERNATIONAL JOURNAL OF ENERGY RESEARCH, v.44, no.13, pp.11006 - 11014
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF ENERGY RESEARCH
- Volume
- 44
- Number
- 13
- Start Page
- 11006
- End Page
- 11014
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145059
- DOI
- 10.1002/er.5695
- ISSN
- 0363-907X
- Abstract
- Ternary silver bismuth sulfide (AgBiS2) colloidal nanocrystals (NCs) have been recognized as a photovoltaic absorber for environmentally-friendly and low-temperature-processed thin film solar cells. However, previous synthetic methods involving hot injection of sulfur precursors into metal oleate precursor solutions do not provide a balance between nucleation and growth, leading to AgBiS2NCs with broad size distributions. Here, we demonstrate the modified synthetic route that size distribution of AgBiS2NCs can be improved by pre-adding the non-coordinating 1-octadecene (ODE) solvent into metal precursor solutions, leading to controlled concentration of coordinating oleic acid with improved hot-injection synthetic conditions. The addition of ODE as a non-coordinating solvent to metal precursor/oleic acid solution significantly suppresses variations in the concentration of coordinating oleic acid after injection of the sulfur precursor solution, leading to a homogenous reaction between the metal and sulfur precursors. For photovoltaic devices fabricated using the resultant AgBiS2NCs, the champion device shows power conversion efficiency (PCE) of 5.94% with an open-circuit voltage (V-OC) of 0.52 V. This performance is better than that a control device (PCEof 5.50% andV(OC)of 0.49 V) because of the reduced energetic disorder and band tail broadening originating from the uniformly-sized AgBiS2NCs.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 자연과학대학 > 서울 화학과 > 1. Journal Articles
- 서울 공과대학 > 서울 유기나노공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145059)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.