Detailed Information

Cited 100 time in webofscience Cited 102 time in scopus
Metadata Downloads

High-Efficiency Photovoltaic Devices using Trap-Controlled Quantum-Dot Ink prepared via Phase-Transfer Exchange

Authors
Aqoma, H[Aqoma, Havid]Al Mubarok, M[Al Mubarok, Muhibullah]Hadmojo, WT[Hadmojo, Wisnu Tantyo]Lee, EH[Lee, Eun-Hye]Kim, TW[Kim, Tae-Wook]Ahn, TK[Ahn, Tae Kyu]Oh, SH[Oh, Seung-Hwan]Jang, SY[Jang, Sung-Yeon]
Issue Date
17-May-2017
Publisher
WILEY-V C H VERLAG GMBH
Keywords
phase-transfer exchange; quantum dots; solar cells; surface traps; voltage loss
Citation
ADVANCED MATERIALS, v.29, no.19
Indexed
SCIE
SCOPUS
Journal Title
ADVANCED MATERIALS
Volume
29
Number
19
URI
https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/28983
DOI
10.1002/adma.201605756
ISSN
0935-9648
Abstract
Colloidal-quantum-dot (CQD) photovoltaic devices are promising candidates for low-cost power sources owing to their low-temperature solution processability and bandgap tunability. A power conversion efficiency (PCE) of >10% is achieved for these devices; however, there are several remaining obstacles to their commercialization, including their high energy loss due to surface trap states and the complexity of the multiple-step CQD-layer-deposition process. Herein, high-efficiency photovoltaic devices prepared with CQD-ink using a phase-transfer-exchange (PTE) method are reported. Using CQD-ink, the fabrication of active layers by single-step coating and the suppression of surface trap states are achieved simultaneously. The CQD-ink photovoltaic devices achieve much higher PCEs (10.15% with a certified PCE of 9.61%) than the control devices (7.85%) owing to improved charge drift and diffusion. Notably, the CQD-ink devices show much lower energy loss than other reported high-efficiency CQD devices. This result reveals that the PTE method is an effective strategy for controlling trap states in CQDs.
Files in This Item
There are no files associated with this item.
Appears in
Collections
Graduate School > Energy Science > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher AHN, TAE KYU photo

AHN, TAE KYU
Institute for Cross-disciplinary Studies (ICS) (Energy)
Read more

Altmetrics

Total Views & Downloads

BROWSE