All inkjet-printed perovskite-based bolometers

Abstract

We show flexible bolometer devices produced entirely using digital inkjet printing on polymer substrates. The bolometers consist of a silver interdigital electrode thermistor covered with a methylammonium lead trihalide perovskite absorber layer which shows good absorber characteristics at visible wavelengths. Both the standalone thermistor and the complete bolometer devices show polymer PTC thermistor-like behavior over a temperature range of 17 to 36 °C, with a change in resistance up-to six orders of magnitude over this temperature range. The addition of the perovskite absorber to the thermistor structure provides the illumination-dependent behavior proper to bolometers.

Recent developments in perovskite-based precursor inks for scalable architectures of perovskite solar cell technology

“…162,173,201,204 This is understandable, since the post-processing methods such as selective laser scribing, followed by large-area coatings of active layers including the perovskite-based light absorbing layer by these schemes have been proposed to facilitate the production of established serially connected modules. [205][206][207] In contrast, other potential scalable methods such as dropon-demand inkjet printing 136,[208][209][210] have yet to be proven as a reliable process step for large perovskite layer deposition in order to overcome advanced key challenges related to creating exibility in pattern designs of any choice through high precision and resolution. 15,17,211 These challenges call for the development of room temperature-based chemically stable precursor inks that can pass through without clotting the micronozzles of the inkjet cartridges, in order to deliver precise microlitre-sized drop volumes over the desired surfaces.…”

“…In contrast, other potential scalable methods such as drop-on-demand inkjet printing 136,208–210 have yet to be proven as a reliable process step for large perovskite layer deposition in order to overcome advanced key challenges related to creating flexibility in pattern designs of any choice through high precision and resolution. 15,17,211 These challenges call for the development of room temperature-based chemically stable precursor inks that can pass through without clotting the micro-nozzles of the inkjet cartridges, in order to deliver precise microlitre-sized drop volumes over the desired surfaces.…”

Infrared Light Detection Technology Based on Organics

“…Besides this photon response, there are other mechanisms for infrared light sensing such as thermal responses from the organic materials, which would further extend the response spectrum of organic detectors. The thermal response in organics is usually correlated to the optoelectronic property change upon infrared illumination, including bolometric, − thermoelectric, − and pyroelectric effects. , …”

Flexible Ceramic Film Sensors for Free-Form Devices

“…This demonstrates a clear correlation with wearable and 3D electronic device research trends. Among the flexible sensors, strain sensors for precise motion detection, such as that of human muscles [42], and photodetectors for biomonitoring, such as continuous glucose monitoring [43][44][45], have seen the most research growth, while other fundamental sensors for temperature [46][47][48][49][50][51][52][53] and humidity [54] have also begun to grow. Temperature sensors, in particular, are the most important since they function as temperature compensators for the other sensors.…”