Light excitation of a valence electron, forming a pair of electrons and holes, and both rely on the gravitational Coulomb bound together, and become a free exciton, under the free-exciton energy levels close to the conduction band, as shown in Figure 5.24.

CD-inspired electronic, a price of a electron and hole, and both rely on Cullen gravitational bound together, as a free stress, stress-free the energy level of the proximity with import, such as shown in Figure 5.24 .

A photoexcitation valence electron, forms a pair of electron and the hole, both depend on the Ulan Bator attraction to fetter in together, becomes a free exciton, under the free exciton energy level abutting conduction band, as shown in Figure 5.24.

Optical excitation of a Valence electron, forming a pair of electrons and holes, bound together by coulombic attraction between, become a free Exciton, under free Exciton energy level close to the conduction band, as shown in Figure 5.24.

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