Owing　to　the　low　flow　field　disturbances　and　fast　response,　thin-film　thermocouples　(TFTCs)　are　used　to　measure　the　service　temperature　of　aero-engines.　Indium　tin　oxide　(ITO)　and　In2O3　are　widely　used　in　high–temperature　measurements.　However,　ITO　undergoes　phase　transition　and　consequent　thermoelectric　failure　at　above　1300　°C.　In　this　study,　In1.35ZnO2.11/In2O3　TFTCs　were　prepared　on　alumina　substrates　via　screen　printing　method　through　introduction　of　ZnO　nanopowder　followed　by　annealing　treatment.　Results　show　that　prepared　TFTCs　exhibited　good　thermoelectric　properties　at　1500　°C.　The　morphology,　structure,　and　electrical　coefficients　of　TFTCs　were　investigated.　The　average　Seebeck　coefficient　was　39.8　μV/°C　at　1500　°C　with　a　drift　rate　(DT)　of　0.84　°C/h,　which　was　significantly　improved　with　respect　to　that　of　ITO/In2O3,　corresponding　to　44.5　μV/°C　at　1270　°C　with　a　DT　of　5.44　°C/h　and　failed　at　higher　temperature.　The　result　of　lumped　capacity　method　test　show　that　the　response　time　was　4.8　ms　at　100　°C.　Preliminary　engine　gas　temperature　measurements　with　a　heat　load　of　1000　°C　at　1　Mach　show　that　these　TFTCs　are　promising　candidates　for　engineering　applications.　Finally,　the　structural　reliability　under　high-magnitude　vibration　and　impact　tests　(10–2000　Hz/20　g　and　100　g/11　ms)　was　also　investigated.　As　a　result　of　the　excellent　bonding　strengths　of　47.36　and　59.83　N　between　the　film　and　the　substrate　for　both　In1.35ZnO2.11　and　In2O3,　respectively,　destructive　cracking　and　peeling　of　the　film　were　not　observed,　and　no　change　in　the　Seebeck　coefficient　of　the　sample　occurred　after　impact　and　vibration　tests.　These　results　provide　an　important　basis　for　the　potential　application　of　In1.35ZnO2.11/In2O3　TFTCs　in　aero-engine　high-temperature　measurements　of　flow　channel　components.　©　2022　Elsevier　Ltd　and　Techna　Group　S.r.l.