Polymer-based solar cells having an active area of 1.6 cm2 fabricated via spray coating

N W Scarratt,J Griffin,D G Lidzey,H Yi,A Iraqi,Y Zhang,T Wang

doi:10.1063/1.4937553

N W Scarratt, J Griffin + Show 5 more

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https://doi.org/10.1063/1.4937553

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Abstract

We demonstrate the fabrication of polymer solar cells in which both a PEDOT:PSS hole transport and a PCDTBT:PC71BM photoactive layer are deposited by spray-casting. Two device geometries are explored, with devices having a pixel area of 165 mm2 attaining a power conversion efficiency of 3.7%. Surface metrology indicates that the PEDOT:PSS and PCDTBT:PC71BM layers have a roughness of 2.57 nm and 1.18 nm over an area of 100 μm2. Light beam induced current mapping reveals fluctuations in current generation efficiency over length-scales of ∼2 mm, with the average photocurrent being 75% of its maximum value.

Highlights

We demonstrate the fabrication of polymer solar cells in which both a PEDOT:PSS hole transport and a PCDTBT:phenyl-C71-butyric acid methyl ester (PC71BM) photoactive layer are deposited by spraycasting
Surface metrology indicates that the PEDOT:PSS and PCDTBT:PC71BM layers have a roughness of 2.57 nm and 1.18 nm over an area of 100 μm[2]
Park et al created Organic photovoltaics (OPVs) devices having a size of 12.5 cm[2] and a power conversion efficiency (PCE) of 1.68% from spray cast P3HT:PCBM using Al grids placed throughout the transparent anode.[9]

Summary

Introduction

Polymer-based solar cells having an active area of 1.6 cm[2] fabricated via spray coating We demonstrate the fabrication of polymer solar cells in which both a PEDOT:PSS hole transport and a PCDTBT:PC71BM photoactive layer are deposited by spraycasting.

Results

Conclusion