The researchers — who are based at the University of Tokyo and RIKEN — blended an organic photoactive material with an adhesive elastomeric matrix. This resulted in a photoactive layer containing connected polymer-rich and isolated elastomer-rich phases, which had high adhesion at the top and bottom interfaces (to prevent water ingress) while retaining good charge transport. The photodetector, which has a total thickness of 3.6 μm, showed a 6% drop in light current after being immersed in water for 5 h and could continuously collect photoplethysmography signals underwater when attached to a finger.

Original reference: Sci. Adv. 10, eadp2679 (2024)

中文翻译：

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在水下工作的有机光电探测器

东京大学和理化学研究所的研究人员将有机光敏材料与粘合弹性体基质混合。这产生了包含连接的富含聚合物和孤立的富含弹性体相的光活性层，其在顶部和底部界面具有高粘附力（以防止水进入），同时保持良好的电荷传输。该光电探测器的总厚度为3.6微米，浸入水中5小时后光电流下降6％，并且当连接到手指上时可以连续收集水下光电体积描记信号。

原文参考： Sci.高级10 、eadp2679 (2024)