Abstract
We report the fabrication of high power conversion efficiency (PCE) polymer/fullerene bulk heterojunction (BHJ) photovoltaic cells using solution-processed Copper (I) Iodide (CuI) as hole transport layer (HTL). Our devices exhibit a PCE value of ∼5.5% which is equivalent to that obtained for control devices based on the commonly used conductive polymer poly(3,4-ethylenedioxythiophene): polystyrenesulfonate as HTL. Inverted cells with PCE >3% were also demonstrated using solution-processed metal oxide electron transport layers, with a CuI HTL evaporated on top of the BHJ. The high optical transparency and suitable energetics of CuI make it attractive for application in a range of inexpensive large-area optoelectronic devices.
Original language | English (US) |
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Article number | 243302 |
Journal | Applied Physics Letters |
Volume | 106 |
Issue number | 24 |
DOIs | |
State | Published - Jun 15 2015 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2015 AIP Publishing LLC.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)