おおよそ350 nm～750 nmの、人間の目が光として感じ取れる領域です。
おおよそ350 nm～800 nmの、人間の目が光として感じ取れる領域です。
GaAsP同様、結晶光電面と呼ばれます。GaAsP光電面が可視光に高い感度が得られるのに対して、ここでの結晶光電面は950 ～ 1700nm程度の近赤外の光を検出することが可能な光電面になります。アルカリ金属を主体とする他光電面と比べ、強い入射光に対し比較的劣化を起こしやすいので注意が必要です。また、は暗電流が多いため、冷却器が必須となります。
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