The LDS perspective of the Creation is that there was a spiritual creation (Genesis 1; Moses 2; Abraham 4:1-5:3) and a physical creation (Genesis 2:4-6; Abraham 5:4-6; Moses 3:4-6).
First of all creation, either spiritual or physical, was light.. Not a sun, not stars in the heavens, just light. I suspect most people believe (as I did) that what He created were photons or, if you consider the spiritual creation in terms of we mortals developing a video game, an off-screen light source.
But while studying today I read D&C 88:4-13 which concludes:
And the light which shineth, which giveth you light, is through him who enlighteneth your eyes, which is the same light that quickeneth your understandings; which light proceedeth forth from the presence of God to fill the immensity of space — the light which is in all things, which giveth life to all things, which is the law by which all things are governed, even the power of God who sitteth upon his throne, who is in the bosom of eternity, who is in the midst of all things.
We learn more about this "light" from D&C 84:45-52, which begins:
For the word of the Lord is truth, and whatsoever is truth is light, and whatsoever is light is Spirit, even the Spirit of Jesus Christ. And the Spirit giveth light to every man that cometh into the world; and the Spirit enlighteneth every man through the world, that hearkeneth to the voice of the Spirit.
The Church describes the "Light of Christ" (also the "Spirit of Christ," something distinctly different from the Holy Ghost) as:
The Light of Christ is the divine energy, power, or influence that proceeds from God through Christ and gives life and light to all things. … In the scriptures, the Light of Christ is sometimes called the Spirit of the Lord, the Spirit of God, the Spirit of Christ, or the Light of Life.
Conclusion: When God declared, "let there be light," He wasn't creating photons (spiritually or physically). What He did was establish the "Light of Christ" (e.g., "let there be the light/power of My influence"), a framework of power and authority that provides the spiritual infrastructure for physical life and the Plan of Salvation.
Is there a doctrinal basis (scriptures, Church teachings, or the writings of prophets) against this conclusion?