An X-ray detector is disclosed. Provided is the X-ray detector which includes: a low-energy X-ray detecting sensor module positioned in the traveling direction of an X-ray passing through a sample a filter unit located in the traveling path of the X-ray passing through the low-energy X-ray detecting sensor module and filtering a low-energy X-ray and a high-energy X-ray detecting sensor module for sensing a high-energy X-ray passing through the filter unit. Accordingly, the present invention can measure bond density with a simple structure.COPYRIGHT KIPO 2017엑스선 디텍터가 개시된다.시료를 통과한 엑스선의 진행방향에 위치하는 저에너지 엑스선 감지센서모듈과상기 저에너지 엑스선 감지센서모듈을 통과한 엑스선의 진행경로에 위치하며, 저에너지 엑스선을 필터링하는 필터부와상기 필터부를 통과한 고에너지 엑스선을 감지하는 고에너지 엑스선 감지센서모듈을 포함하는 엑스선 디텍터가 제공된다.
