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Overcoming the Light‐Soaking Problem in Inverted Polymer Solar Cells by Introducing a Heavily Doped Titanium Sub‐Oxide Functional Layer
Author(s) -
Kim Geunjin,
Kong Jaemin,
Kim Junghwan,
Kang Hongkyu,
Back Hyungcheol,
Kim Heejoo,
Lee Kwanghee
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201401298
Subject(s) - materials science , ohmic contact , doping , polymer solar cell , layer (electronics) , indium tin oxide , titanium oxide , optoelectronics , oxide , indium , heterojunction , titanium , tin oxide , energy conversion efficiency , solar cell , chemical engineering , inorganic chemistry , nanotechnology , metallurgy , engineering , chemistry
Light‐soaking‐free inverted polymer solar cell (i‐PSC) devices are demonstrated by incorporating nitrogen doped sol–gel titanium sub‐oxide (N‐TiO x ). A heavily doped electron transport layer in i‐PSCs, N‐TiO x on indium tin oxide, yields an Ohmic contact with the bulk heterojunction layer that does not exhibit light‐soaking processes. This results in highly efficient i‐PSCs with power conversion efficiencies of 8.8%.
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