@article{Wheeler and Deledalle:2015:10.1103/PhysRevApplied.4.024020, author = {Wheeler and Deledalle, F and Tokmoldin, N and Kirchartz, T and Nelson, J and Durrant, J}, doi = {10.1103/PhysRevApplied.4.024020}, journal = {Physical review applied}, title = {Influence of Surface Recombination on Charge-Carrier Kinetics in Organic Bulk Heterojunction Solar Cells with Nickel Oxide Interlayers}, url = {http://dx.doi.org/10.1103/PhysRevApplied.4.024020}, volume = {4}, year = {2015} }
TY - JOUR AB - The choice of electrode for organic photovoltaics is known to be of importance to both device stability and performance, especially regarding the open-circuit voltage (VOC). Here we show that the work function of a nickel oxide anode, varied using an O2 plasma treatment, has a considerable influence on the open-circuit voltage VOC of an organic solar cell. We probe recombination in the devices using transient photovoltage and charge extraction to determine the lifetime as a function of charge-carrier concentration and compare the experimental results with numerical drift-diffusion simulations. This combination of experiment and simulations allows us to conclude that the variations in VOC are due to a change in surface recombination, localized at the NiO anode, although only a small change in carrier lifetime is observed. AU - Wheeler AU - Deledalle,F AU - Tokmoldin,N AU - Kirchartz,T AU - Nelson,J AU - Durrant,J DO - 10.1103/PhysRevApplied.4.024020 PY - 2015/// SN - 2331-7019 TI - Influence of Surface Recombination on Charge-Carrier Kinetics in Organic Bulk Heterojunction Solar Cells with Nickel Oxide Interlayers T2 - Physical review applied UR - http://dx.doi.org/10.1103/PhysRevApplied.4.024020 UR - http://hdl.handle.net/10044/1/26019 VL - 4 ER -
Transition to Zero Pollution is a flagship initiative of the Imperial's Academic Strategy, with a vision to realise a sustainable zero pollution future. The initiative brings researchers from different disciplines together to take a systems approach to tackling pollution in all its forms.