A facile route to inverted polymer solar cells using a precursor based zinc oxide electron transport layer

Abstract

A facile route to inverted polymer solar cells using a precursor based zinc oxide electron transport layer de Bruyn, Paul; Moet, D. J. D.; Blom, P. W. M. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. Inverted polymer:fullerene solar cells with ZnO and MoO 3 transport layers are demonstrated. ZnO films are prepared through spin casting of a zinc acetylacetonate hydrate solution, followed by low temperature annealing under ambient conditions. The performance of solar cells with an inverted structure is shown to be equivalent to that of conventional cells with a bottom-anode-top-cathode configuration for three efficient polymer:fullerene systems.

All-solution processed polymer light-emitting diodes with air stable metal-oxide electrodes

“…From the good performance of both solar cells (Ref. [19]) and PLEDs presented here with this precursor ZnO we can conclude that the hydrozincite species does not hinder the electrical properties.…”

“…ZnO can be created through the spin casting and subsequent decomposition of zinc acetylacetonate (Zn(acac) 2 ) under ambient conditions and at low temperatures (130°C) [19,20]. V 2 O 5 is deposited by diluting vanadium oxytriisopropoxide in isopropanol and spin casting this solution in ambient conditions to yield a layer of V 2 O 5 .…”

Ethanedithiol Treatment of Solution‐Processed ZnO Thin Films: Controlling the Intragap States of Electron Transporting Interlayers for Efficient and Stable Inverted Organic Photovoltaics

“…[10,11] A variety of low-temperature and solution-based methods by using Sol-gel precursors or colloidal nanocrystals to deposit ZnO ETLs have been demonstrated. [10][11][12][13] Despite the successes of applying solution-processed ZnO ETLs in inverted OPVs, a major challenge lies in how to control the intragap states induced by surface defects. [14,15] Lowtemperature and solution-processed ZnO ETLs generally have high densities of surface defects such as dangling bonds and surface groups, introducing various intragap energy levels.…”

Solution processable interface materials for nanoparticulate organic photovoltaic devices

“…Whilst UV treatment of such ZnO layers is typically used to increase the conductivity of the layer (via loss of O 2 À radicals) and results in a decrease in work function of the ZnO layer from 4.2 eV to 3.7 eV, this decrease is only temporary and does not determine the work function of the interface. 25 Therefore, the application of solution processed ZnO appears to be an attractive route for the replacement of reactive Ca interfacial layers in NPOPV devices.…”