Table 1. Comparison of recent graphene/QD and graphene/TMDC hybrid photodetectors (room temperature).

Reference	Material	Gain	RI (A/W)	D* (cm.Hz1/2/W)	Response time	Light source and min. power
Konstantatos et al. 2012. [Ref. 16]	Graphene/PbS-QD	108	5 × 107	7 × 1013	τ ON~10–20 ms τ OFF~0.1–1 sec	532 nm laser,~10−9 mW/cm2
Sun et al. 2012 [Ref. 20]	Graphene/PbS-QD	N/A	1 × 107	N/A	τ ON~0.3 sec τ OFF~1.7 sec	895 nm LED, 14.5 nW/cm2
Zhang et al. 2012 [Ref. 21]	Graphene/PbS-QD	N/A	1.7 × 103	N/A	not specified, estimated > 10sec	halogen lamp, 200 μW/cm2
Roy et al. 2013 [Ref. 18]	Graphene/MoS2	4 × 1010 (Low-T)	5 × 108	N/A	~1 sec	635 nm LED, 1 fW/μm2
Zhang et al. 2014 [Ref. 19]	Graphene/MoS2	108	1.2 × 107	N/A	No dynamic response reported	650 nm laser, 0.01 W/cm2