The use of silane in photovoltaic cells

What is Silane pyrolysis?

The earliest studies of silane pyrolysis assumed a straight forward decomposition of the silane molecule into silicon and hydrogen according to Eq. (1). However, later studies introduced an intermediate stage in accordance with Eq. (3).

What are the major findings of silane conversion?

The major findings were as follows; silane conversion was essentially complete in the first few cm of the bed. The fines are essentially formed by wall deposition of the various polymeric Si species leaving the bed rather than by homogeneous decomposition of silane followed by nucleation.

How do silane and siloxane side chains affect crystallinity?

As hybrid side chains, silane and siloxane side chains have considerable effects, not only in increasing the carrier mobility and tuning the energy level, but also in affecting the crystallinity and molecular orientation.

What is the decomposition temperature of silane?

The decomposition temperature for silane is about 420 °C . However, at this temperature the kinetic energy of the individual silicon atoms is too low to form crystalline structures. Low temperature atmospheric pressure decomposition will therefore cause amorphous structures .

How are silane fines formed?

The fines are essentially formed by wall deposition of the various polymeric Si species leaving the bed rather than by homogeneous decomposition of silane followed by nucleation. This is in disagreement with other studies where the homogeneous reaction of silane (mainly in the bubble phase) is considered to be responsible for the fine formation.

Do organic solar cells have high power conversion efficiencies?

Dedicated to the Special Issue of Organic Photovoltaic. With the tactful material design, skillful device engineering, and in-depth understanding of morphology optimization, organic solar cells (OSCs) have achieved considerable success. Therefore, OSCs have reached high power conversion efficiencies (PCEs) exceeding 19%.