Journal
DYES AND PIGMENTS
Volume 126, Issue -, Pages 179-185Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2015.11.025
Keywords
Perovskite; Hole transporting materials; 3,4-Ethylenedioxythiophene; Solar cells; Organic semiconductor; Triphenylamine derivartives
Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2014R1A2A2A03004716]
- National Research Foundation of Korea [2014R1A2A2A03004716] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Two novel star-shaped hole transporting materials (HTMs). i.e. [BMPA-EDOT](3)-TPA and [BMPA-BTD](3)-TPA with EDOT or BTD moiety as side arm have been designed and synthesized. The optical and electronic properties of these HTMs were modified by changing the side arms. Surprisingly, the cell performance was dependent on the moietys such as EDOT or BTD of side arms. Perovskite solar cells with [BMPAEDOT](3)-TPA gave a short circuit photocurrent density (J(sc)) of 21.01 mA cm(-2), an open circuit voltage (V-oc) of 0.916 V, and a fill factor (ff) of 0.67, corresponding to an overall conversion efficiency of 12.92%. (C) 2015 Elsevier Ltd. All rights reserved.
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