We have developed an isolated attosecond pulse source whose bandwidth corresponds to 30-as duration assuming Fourier limit based on based on a 1.6-cycle Ti:sapphire laser pulse, a time-resolved and angle-resolved photoelectron spectroscopy (Tr-ARPES) with sub-5fs-probe resolution that will enable subcycle electronic band mapping, and a time-resolved reflectivity measurement with much higher sensitivity than previous high-order harmonic spectroscopic techniques. By using our developed attosecond spectroscopic techniques, we have demonstrated a time-domain measurement of PHz-dipole oscillation in sapphire crystal, and Tr-ARPES measurement of the ultrafast evolution of energy redistribution process in photoexcited graphite. These newly developed attosecond spectroscopic techniques and ultrafast electronic dynamics in solid state materials will contribute to future development of PHz-driven solid state devices.