Temperature (left), gas surface density (middle), and dust surface density (right) evolution for a disc forming from a 1 M_⊙ cloud core with a centrifugal radius of 10 au and photoevaporation according to Pic21. The dust is allowed to grow to the fragmentation limit. In the innermost part of the disc the temperature can reach 1500 K due to viscous heating and in the outer disc the temperature is set purely by irradiation. Photoevaporation begins to open up a gap in the gas disc around 3.75 Myr. By 4 Myr, the inner gas disc is completely dispersed, leaving behind an outer depleted disc. We find that 0.6 M_⊕ of the dust is retained outside this gap and is pushed outwards with time.