Spin and spray
deposition techniques have been used sequentially to examine the effect of the
composition of top blend layer on the photovoltaic properties of organic solar
cells using well-known poly(3-hexylthiophene):[6,6]-Phenyl C61 butyric acid
methyl ester (P3HT:PCBM) blend. Devices were prepared by spraying an extra
layer of P3HT or PCBM (~15 nm) onto spin coated (1:1) blend film. P3HT-rich top
phase slightly perturbs photovoltaic activity whereas PCBM-rich top phase
drastically changes the power conversion efficiencies with a marked decrease in
fill factors. Carrier mobilities were only marginally affected by the presence
of spray coated top layers. However, series resistance of top phase P3HT-rich
blends remained the same with respect to spin coated sample whereas top phase
PCBM-rich blends exhibit relatively higher series resistances for both annealed
and non-annealed samples. Based on the presented results, one might speculate
that electron injection to cathode with P3HT is almost as efficient as with
PCBM for active layers utilizing P3HT:PCBM blend.
Birincil Dil | İngilizce |
---|---|
Konular | Kimya Mühendisliği |
Bölüm | Araştırma Makalesi |
Yazarlar | |
Yayımlanma Tarihi | 1 Şubat 2020 |
Gönderilme Tarihi | 4 Nisan 2019 |
Kabul Tarihi | 27 Aralık 2019 |
Yayımlandığı Sayı | Yıl 2020 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.