Draw a circuit diagram and post it. If you don't know how to do that, now is the time to start learning.Here is a great place to start.
when i just use the solar panel and led
What does that mean? Did you have a 100 Ohm resistor in series with the LED? If not, don't you think that would have an effect?Always post a circuit diagram, so we know what you are talking about. Hint: buy a multimeter, so you can measure currents and voltages. Very, very informative!
What is it that you are expecting the transistor to do?It wont make the led any brighter, and because there will a small voltage drop across the transistor, the led will be dimmer.
will it hurt or damage my solar cells if I hook them directly up to what I am trying to power without a transistor in between?