Abstract
Active layers for organic photovoltaic devices (OPVs) were prepared by hand drawing with paint marker pens containing solutions of the materials. Although the pen-coated organic films were visually non-uniform with quite high surface roughness, OPV devices using these films exhibited similar or slightly better performances than those using spin-coated films. As such, the pen-coating technique represents an easily accessible, inexpensive, and highly material-efficient method for fabricating OPVs.
Highlights
Organic photovoltaic (OPV) devices are attracting much attention because of their potential application as flexible and large-area solar cells that can be fabricated at low cost.[1,2,3] organic photovoltaic devices (OPVs) device structures can be used as organic photodetectors (OPDs) by applying a reverse bias and detecting the difference between the photocurrent and dark current.[4]
It is important to select the optimal method for the target device; for example, high throughput is crucial for large-area OPVs, whereas the patterning resolution and precision and the applicability to various substrates are more relevant for flexible OPDs
We demonstrate that thin layers for OPVs can be prepared by drawing with a paint marker pen containing a solution of the organic semiconductors
Summary
Organic photovoltaic (OPV) devices are attracting much attention because of their potential application as flexible and large-area solar cells that can be fabricated at low cost.[1,2,3] OPV device structures can be used as organic photodetectors (OPDs) by applying a reverse bias and detecting the difference between the photocurrent and dark current.[4]. It is important to select the optimal method for the target device; for example, high throughput is crucial for large-area OPVs, whereas the patterning resolution and precision and the applicability to various substrates are more relevant for flexible OPDs. High material efficiency and the ease and versatility of the coating process are other important features in the research and development of materials for OPVs and OPDs. In this study, we demonstrate that thin layers for OPVs can be prepared by drawing with a paint marker pen containing a solution of the organic semiconductors. We demonstrate that thin layers for OPVs can be prepared by drawing with a paint marker pen containing a solution of the organic semiconductors This method provides a simple, material-efficient, accessible, and low-cost route to obtaining devices with patterns of moderate sizes (several millimeters to centimeters).
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