Exploring wide gap semiconductor characteristics in -pinene crystals: insights from density functional theory.

Area of Science:

• Solid State Physics
• Computational Chemistry
• Materials Science

Background:

• Alpha-pinene, a natural monoterpene from conifers, exhibits pharmacological potential.
• Its crystal structure and electronic properties are key to understanding its applications.
• Wide band gap materials are crucial for next-generation nanoelectronics.

Purpose of the Study:

• To theoretically investigate the structural and electronic properties of (1S)-alpha-pinene crystals.
• To evaluate its potential for nanoelectronic applications based on its band gap.
• To analyze the electronic structure and identify potential sites for chemical interactions.

Main Methods:

• Density Functional Theory (DFT) calculations using Quantum Espresso.
• Employed local density approximation (LDA-PZ) and generalized gradient approximation (GGA-PBE).
• Utilized norm-conserving pseudopotentials for accurate core electron representation.

Main Results:

• Orthorhombic crystal structure with 104 atoms per unit cell, matching experimental data.
• Calculated indirect band gaps of 3.58 eV (LDA-PZ) and 4.32 eV (GGA-PBE).
• Identified C and H atomic orbitals as primary contributors to the electronic structure.

Conclusions:

• (1S)-alpha-pinene crystals exhibit wide band gap semiconductor properties.
• The material shows promise for nanoelectronic device applications.
• Electronic structure analysis suggests potential for targeted chemical modifications.