Princeton University

Nicolas Pegard

Jason Wolf Fleischer

Howard A Stone

Yueh-Lin Loo

Jongbok Kim

Pilnam Kim

A photovoltaic cell and method of making are disclosed. The photovoltaic cell includes a substrate having a surface at least partially covered in wrinkles and folds, the folds dividing the surface into a plurality of domains. A photoactive layer is formed on the substrate. At least one transparent electrode is coupled to the photoactive layer and configured to allow transmission of light into the photoactive layer. The domains may have a wrinkle periodicity of less than 2 &#x3bc;m. The folds may have a fold density of less than 0.25. The transport layer may comprise PEDOT:PSS. The photoactive layer may comprise P3HT:PCBM. The photoactive layer may comprise a bulk heterojunction.

Photoelectric cells incorporating wrinkles and folds to enhance efficiency and bendability and method of making

A microscope is disclosed, the microscope having a light source defining an optical axis along a Z direction and a detector disposed in X-Y direction, orthogonal to the optical axis, the detector configured to capture images of an object. The microscope includes a fluid channel having an inlet and an outlet configured with a fluid flow to transport the object from the inlet to the outlet. The detector is configured to capture a plurality of images of the object as the object moves from the inlet to the outlet. The plurality of images of the object may have different heights of the sample with respect to the detector as the sample flows through the channel. The channel may be tilted with respect to the optical axis. The detector may be tilted with respect to the optical axis.

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Princeton, NJ, United States of America

Nicolas Pegard