Complex sentence: In 1960, Martin Pope and his group made the seminal discovery of ohmic, dark injecting electrode contacts to organic crystals, and described the necessary energetic requirements (work functions) for hole and electron injecting electrode contacts.
Split into simpler sentences: In 1960, Martin Pope and his group made the seminal discovery of ohmic, dark injecting electrode contacts to organic crystals,. They further described the necessary energetic requirements (work functions) for hole and electron injecting electrode contacts.