An eco‐friendly biodegradable starch paper is introduced for use in next‐generation disposable organic electronics without the need for a planarizing layer. The starch papers are formed by starch gelatinization using a very small amount of 0.5 wt% polyvinyl alcohol (PVA), a polymer that bound to the starch, and 5 wt% of a crosslinker that bound to the PVA to improve mechanical properties. This process minimizes the additions of synthetic materials. The resultant starch paper provides a remarkable mechanical strength and stability under repeated movements. Robustness tests using various chemical solvents are conducted by immersing the starch paper for 6 h. Excellent nonpolar solvent stabilities are observed. They are important for the manufacture of organic electronics that use nonpolar solution processes. The applicability of the starch paper as a flexible substrate is tested by fabricating flexible organic transistors using pentacene, dinaphtho[2,3‐b:2′,3′‐f]thieno[3,2‐b]thiophene, and poly(dimethyl‐triarylamine) using both vacuum and solution processes. Electrically well‐behaved device performances are identified. Finally, the eco‐friendly biodegradability is verified by subjecting the starch paper to complete degradation by fungi in fishbowl water over 24 d. These developments illuminate new research areas in the field of biodegradable green electronics, enabling the development of extremely low‐cost electronics.

中文翻译：

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适用于柔性，透明和一次性有机电子产品的新型环保淀粉纸

引入了一种生态友好的可生物降解淀粉纸，可用于下一代一次性有机电子产品，而无需平坦化层。通过使用非常少量的0.5 wt％的聚乙烯醇（PVA），与淀粉结合的聚合物和5 wt％的与PVA结合以改善机械性能的交联剂，通过淀粉糊化形成淀粉纸。此过程可最大程度地减少合成材料的添加。所得淀粉纸在反复运动下具有出色的机械强度和稳定性。通过将淀粉纸浸入6小时来进行使用各种化学溶剂的稳健性测试。观察到极好的非极性溶剂稳定性。它们对于使用非极性溶液工艺的有机电子产品的制造非常重要。通过使用并五苯，二萘并[2,3-b：2'，3'-f]噻吩并[3,2-b]噻吩和聚（二甲基）制造柔性有机晶体管来测试淀粉纸作为柔性基材的适用性-三芳基胺），同时使用真空和固溶工艺。确定电气性能良好的设备性能。最后，通过在24 d内使淀粉纸在鱼缸水中被真菌完全降解，从而验证了生态友好型生物可降解性。这些进展阐明了可生物降解的绿色电子学领域的新研究领域，从而促进了超低成本电子学的发展。确定电气性能良好的设备性能。最后，通过在24 d内使淀粉纸在鱼缸水中被真菌完全降解，从而验证了生态友好型生物可降解性。这些进展阐明了可生物降解的绿色电子学领域的新研究领域，从而促进了超低成本电子学的发展。确定电气性能良好的设备性能。最后，通过在24 d内使淀粉纸在鱼缸水中被真菌完全降解，从而验证了生态友好型生物可降解性。这些进展阐明了可生物降解的绿色电子学领域的新研究领域，从而促进了超低成本电子学的发展。