Publication

Bulk Heterojunction Tandem Photoelectric Cell Based on p-Si and Phthalocyanine

Ulf Anders Hagfeldt
2017
Journal Articles

Abstract

An organic-inorganic (p-Si and phthalocyanine) hybrid tandem heterojunction Ag/p-Si/AlPc:H2Pc/ITO photoelectric cell was fabricated by pressing technology using preliminary vapor deposited heterojunction films of mixed aluminum-phthalocyanine (AlPc) and metal free phthalocyanine (H2Pc) on p-Si substrate and on ITO coated plastic substrate. By keeping organic films face to face both substrates were pressed and fixed together by adhesive at elevated temperature. Total thickness of the AlPc and H2Pc films were equal to 300 nm. On the back side of p-Si substrate the Ag film was deposited. The device architecture was the following: Ag/p-Si/AlPc:H2Pc/ITO. The morphology of the organic semiconductors film was investigated by AFM. The optical properties of the AlPc:H2Pc film were studied by UV-visible spectroscope. Current-Voltage characteristics were measured in dark and also illumination conditions. Under illumination of 296 W/m(2) the values of V-oc, I-SC, FF and efficiency were equal to 0.5 V, 4 mA, 0.45 and 0.61 %, respectively. The I-V and P-V characteristics of the solar cell were simulated by using Shockley equation and its Newton Raphson solution, respectively for dark and illumination conditions. The obtained simulated results were in good agreement with the experimental results.

Official source

https://infoscience.epfl.ch/entities/publication/eda0a0b8-45a9-4594-af99-b0c4672613f9

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Ulf Anders Hagfeldt
2017
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/eda0a0b8-45a9-4594-af99-b0c4672613f9

About this result

Related concepts (16)

Organic solar cell

An organic solar cell (OSC) or plastic solar cell is a type of photovoltaic that uses organic electronics, a branch of electronics that deals with conductive organic polymers or small organic molecules, for light absorption and charge transport to produce electricity from sunlight by the photovoltaic effect. Most organic photovoltaic cells are polymer solar cells. The molecules used in organic solar cells are solution-processable at high throughput and are cheap, resulting in low production costs to fabricate a large volume.

Solar cell

A solar cell, or photovoltaic cell, is an electronic device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical phenomenon. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Individual solar cell devices are often the electrical building blocks of photovoltaic modules, known colloquially as solar panels.

Thin-film solar cell

Thin-film solar cells are made by depositing one or more thin layers (thin films or TFs) of photovoltaic material onto a substrate, such as glass, plastic or metal. Thin-film solar cells are typically a few nanometers (nm) to a few microns (μm) thick–much thinner than the wafers used in conventional crystalline silicon (c-Si) based solar cells, which can be up to 200 μm thick. Thin-film solar cells are commercially used in several technologies, including cadmium telluride (CdTe), copper indium gallium diselenide (CIGS), and amorphous thin-film silicon (a-Si, TF-Si).

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